Fix: Render tooltip without content in NextExecutionTime component (#238378)

## Summary

Problem this PR fixes:

The workflow list view seems to only show trigger types for workflows
that have a schedule trigger.
<img width="5344" height="3054" alt="image"
src="https://github.com/user-attachments/assets/3013be24-0632-4f76-8c97-f4c1d892be82"
/>

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support](https://github.com/elastic/kibana/blob/main/src/platform/packages/shared/kbn-i18n/README.md)
- [ ]
[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)
was added for features that require explanation or tutorials
- [ ] [Unit or functional
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were updated or added to match the most common scenarios
- [ ] If a plugin configuration key changed, check if it needs to be
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- [ ] [Flaky Test
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Author: VladimirFilonov

src/platform/plugins/shared/workflows_management/public/shared/ui/next_execution_time.test.tsx

@@ -0,0 +1,145 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the "Elastic License
+ * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
+ * Public License v 1"; you may not use this file except in compliance with, at
+ * your election, the "Elastic License 2.0", the "GNU Affero General Public
+ * License v3.0 only", or the "Server Side Public License, v 1".
+ */
+
+import { render, screen } from '@testing-library/react';
+import React from 'react';
+import type { WorkflowTrigger } from '../../../server/lib/schedule_utils';
+import { NextExecutionTime } from './next_execution_time';
+import { useGetFormattedDateTime } from './use_formatted_date';
+import { getWorkflowNextExecutionTime } from '../../lib/next_execution_time';
+
+// Mock the dependencies
+jest.mock('./use_formatted_date');
+jest.mock('../../lib/next_execution_time');
+
+describe('NextExecutionTime', () => {
+  const mockGetFormattedDateTime = jest.fn();
+  const mockGetWorkflowNextExecutionTime = jest.fn();
+
+  beforeEach(() => {
+    jest.clearAllMocks();
+    (useGetFormattedDateTime as jest.Mock).mockReturnValue(mockGetFormattedDateTime);
+    (getWorkflowNextExecutionTime as jest.Mock).mockImplementation(
+      mockGetWorkflowNextExecutionTime
+    );
+  });
+
+  const createMockTriggers = (overrides: Partial<WorkflowTrigger>[] = []): WorkflowTrigger[] => {
+    return overrides.map((override) => ({
+      type: 'scheduled',
+      enabled: true,
+      with: { every: '5m' },
+      ...override,
+    }));
+  };
+
+  const TestChild = () => <div data-test-subj="test-child">Test Child</div>;
+
+  describe('children rendering', () => {
+    it('should always render children regardless of nextExecutionTime', () => {
+      mockGetWorkflowNextExecutionTime.mockReturnValue(null);
+
+      render(
+        <NextExecutionTime triggers={[]} history={[]}>
+          <TestChild />
+        </NextExecutionTime>
+      );
+
+      expect(screen.getByTestId('test-child')).toBeInTheDocument();
+    });
+  });
+
+  describe('tooltip behavior', () => {
+    it('should show empty tooltip when nextExecutionTime is null', () => {
+      mockGetWorkflowNextExecutionTime.mockReturnValue(null);
+
+      render(
+        <NextExecutionTime triggers={[]} history={[]}>
+          <TestChild />
+        </NextExecutionTime>
+      );
+
+      // Tooltip should be present but with empty content
+      expect(screen.getByTestId('test-child')).toBeInTheDocument();
+      // Verify that getWorkflowNextExecutionTime was called
+      expect(mockGetWorkflowNextExecutionTime).toHaveBeenCalledWith([], []);
+    });
+  });
+
+  describe('different trigger combinations', () => {
+    it('should handle empty triggers array', () => {
+      mockGetWorkflowNextExecutionTime.mockReturnValue(null);
+
+      render(
+        <NextExecutionTime triggers={[]} history={[]}>
+          <TestChild />
+        </NextExecutionTime>
+      );
+
+      expect(mockGetWorkflowNextExecutionTime).toHaveBeenCalledWith([], []);
+      expect(screen.getByTestId('test-child')).toBeInTheDocument();
+    });
+
+    it('should handle non-scheduled triggers only', () => {
+      const triggers = createMockTriggers([
+        { type: 'manual', enabled: true },
+        { type: 'alert', enabled: true },
+      ]);
+      mockGetWorkflowNextExecutionTime.mockReturnValue(null);
+
+      render(
+        <NextExecutionTime triggers={triggers} history={[]}>
+          <TestChild />
+        </NextExecutionTime>
+      );
+
+      expect(mockGetWorkflowNextExecutionTime).toHaveBeenCalledWith(triggers, []);
+    });
+
+    it('should handle scheduled triggers only', () => {
+      const triggers = createMockTriggers([
+        { type: 'scheduled', enabled: true, with: { every: '5m' } },
+      ]);
+      const nextExecutionTime = new Date('2025-01-15T11:00:00Z');
+      mockGetWorkflowNextExecutionTime.mockReturnValue(nextExecutionTime);
+      mockGetFormattedDateTime.mockReturnValue('Jan 15, 2025 11:00 AM');
+
+      render(
+        <NextExecutionTime triggers={triggers} history={[]}>
+          <TestChild />
+        </NextExecutionTime>
+      );
+
+      expect(mockGetWorkflowNextExecutionTime).toHaveBeenCalledWith(triggers, []);
+      expect(screen.getByTestId('test-child')).toBeInTheDocument();
+      expect(mockGetFormattedDateTime).toHaveBeenCalledWith(nextExecutionTime);
+    });
+
+    it('should handle mixed trigger types', () => {
+      const triggers = createMockTriggers([
+        { type: 'manual', enabled: true },
+        { type: 'alert', enabled: true },
+        { type: 'scheduled', enabled: true, with: { every: '30m' } },
+      ]);
+      const nextExecutionTime = new Date('2025-01-15T10:30:00Z');
+      mockGetWorkflowNextExecutionTime.mockReturnValue(nextExecutionTime);
+      mockGetFormattedDateTime.mockReturnValue('Jan 15, 2025 10:30 AM');
+
+      render(
+        <NextExecutionTime triggers={triggers} history={[]}>
+          <TestChild />
+        </NextExecutionTime>
+      );
+
+      expect(mockGetWorkflowNextExecutionTime).toHaveBeenCalledWith(triggers, []);
+      expect(screen.getByTestId('test-child')).toBeInTheDocument();
+      expect(mockGetFormattedDateTime).toHaveBeenCalledWith(nextExecutionTime);
+    });
+  });
+});

src/platform/plugins/shared/workflows_management/public/shared/ui/next_execution_time.tsx

@@ -25,18 +25,17 @@ export function NextExecutionTime({ triggers, history, children }: NextExecution
   const nextExecutionTime = getWorkflowNextExecutionTime(triggers, history);
   const getFormattedDateTime = useGetFormattedDateTime();
 
-  if (!nextExecutionTime) {
-    return null;
-  }
-
   return (
     <EuiToolTip
-      content={i18n.translate('workflows.workflowList.nextExecutionTime.tooltip', {
-        defaultMessage: 'Next execution: {date}',
-        values: {
-          date: getFormattedDateTime(nextExecutionTime),
-        },
-      })}
+      content={
+        nextExecutionTime &&
+        i18n.translate('workflows.workflowList.nextExecutionTime.tooltip', {
+          defaultMessage: 'Next execution: {date}',
+          values: {
+            date: getFormattedDateTime(nextExecutionTime),
+          },
+        })
+      }
     >
       {children}
     </EuiToolTip>