fix: check for balance considering different formats (#28382)

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## **Description**

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also include relevant motivation and context. Have in mind the following
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2. What is the improvement/solution?
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A failed cast from a localized numeric value is preventing the send
button from displaying in languages such as Spanish or French. Stop that
cast and check for a '0' string instead.

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CHANGELOG entry: Fixed Send button not showing in token details page for
certain languages

## **Related issues**

Fixes: #27789

## **Manual testing steps**

```gherkin
Feature: my feature name

  Scenario: user [verb for user action]
    Given [describe expected initial app state]

    When user [verb for user action]
    Then [describe expected outcome]
```

## **Screenshots/Recordings**

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### **After**

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<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Medium Risk**
> Changes the `hasBalance` gating for Token Details actions, which
controls whether actions like Send are shown/enabled; incorrect string
formats (e.g., `'0.00'`) could change behavior. Scope is small and
covered by new unit tests for localized formats.
> 
> **Overview**
> Fixes Token Details action availability checks to avoid `Number()`
parsing failures on localized balance strings (e.g., `1.000,50`), by
treating any non-empty balance not equal to `'0'` as having funds.
> 
> Adds a focused test suite that spies on `TokenDetailsActions` and
asserts the computed `hasBalance` prop for empty/undefined, `'0'`, and
localized numeric balance formats.
> 
> <sup>Reviewed by [Cursor Bugbot](https://cursor.com/bugbot) for commit
c727e9e. Bugbot is set up for automated
code reviews on this repo. Configure
[here](https://www.cursor.com/dashboard/bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: bergarces

app/components/UI/TokenDetails/components/AssetOverviewContent.test.tsx

@@ -17,6 +17,8 @@ import {
 } from '@metamask/perps-controller';
 import { strings } from '../../../../../locales/i18n';
 import type { TokenSecurityData } from '@metamask/assets-controllers';
+// eslint-disable-next-line import-x/no-namespace
+import * as TokenDetailsActionsModule from './TokenDetailsActions';
 
 const mockHandlePerpsAction = jest.fn();
 const mockTrack = jest.fn();
@@ -796,4 +798,59 @@ describe('AssetOverviewContent', () => {
       ).toBeNull();
     });
   });
+
+  describe('TokenDetailsActions hasBalance prop', () => {
+    let tokenDetailsActionsSpy: jest.SpyInstance;
+
+    beforeEach(() => {
+      jest.clearAllMocks();
+      mockBuild.mockReturnValue({ category: 'test-event' });
+      mockAddProperties.mockReturnValue({ build: mockBuild });
+      mockCreateEventBuilder.mockReturnValue({
+        addProperties: mockAddProperties,
+      });
+      mockSelectMarketInsightsEnabled.mockReturnValue(false);
+      mockUseMarketInsights.mockReturnValue({
+        report: null,
+        isLoading: false,
+        error: null,
+        timeAgo: null,
+      });
+      mockUsePerpsPositionForAsset.mockReturnValue({
+        position: null,
+        hasFundsInPerps: false,
+        accountState: null,
+        isLoading: false,
+      });
+      tokenDetailsActionsSpy = jest.spyOn(
+        TokenDetailsActionsModule,
+        'TokenDetailsActions',
+      );
+    });
+
+    afterEach(() => {
+      tokenDetailsActionsSpy.mockRestore();
+    });
+
+    it.each([
+      [false, undefined],
+      [false, ''],
+      [false, '0'],
+      [true, '1,000.50'],
+      [true, '1.000,50'],
+    ])(
+      'passes hasBalance %s when balance is %s',
+      (expectedHasBalance, balance) => {
+        renderWithProvider(
+          <AssetOverviewContent {...defaultProps} balance={balance} />,
+          { state: createState(true) },
+        );
+
+        expect(tokenDetailsActionsSpy).toHaveBeenCalledWith(
+          expect.objectContaining({ hasBalance: expectedHasBalance }),
+          expect.anything(),
+        );
+      },
+    );
+  });
 });

app/components/UI/TokenDetails/components/AssetOverviewContent.tsx

@@ -828,7 +828,7 @@ const AssetOverviewContent: React.FC<AssetOverviewContentProps> = ({
           {useNewLayout ? (
             <TokenDetailsActions
               hasPerpsMarket={hasPerpsMarket}
-              hasBalance={balance != null && Number(balance) > 0}
+              hasBalance={Boolean(balance) && balance !== '0'}
               isBuyable={isBuyable}
               isNativeCurrency={token.isETH || token.isNative || false}
               token={token}