fix(security/scout): remove cleanStandardList to preserve llmProxy connector

cleanStandardList() deletes saved objects of type 'action', which
includes the .gen-ai connector created by the worker-scoped llmProxy
fixture. Calling it in beforeEach destroyed the connector before the
test ran, making the bulk 'Add to chat' action invisible and causing
every subsequent step to fail.

The connector lifecycle is owned by llmProxy; this test only needs
targeted deleteAll() calls for the objects it creates.

Refs #17496

Author: jonwalstedt

x-pack/solutions/security/plugins/security_solution/test/scout/ui/parallel_tests/investigations/bulk_add_alerts_to_chat.spec.ts

@@ -22,10 +22,12 @@ spaceTest.describe(
     const ruleNames: string[] = [];
 
     spaceTest.beforeEach(async ({ browserAuth, apiServices, scoutSpace }) => {
-      // Defensive cleanup from any prior failed run
+      // Defensive cleanup from any prior failed run.
+      // Note: cleanStandardList() is intentionally omitted here — it deletes saved objects
+      // of type 'action', which would destroy the .gen-ai connector created by the
+      // worker-scoped llmProxy fixture and make the bulk "Add to chat" action disappear.
       await apiServices.detectionRule.deleteAll();
       await apiServices.detectionAlerts.deleteAll();
-      await scoutSpace.savedObjects.cleanStandardList();
 
       ruleNames.length = 0;
       for (let i = 0; i < ALERT_COUNT; i++) {
@@ -40,10 +42,9 @@ spaceTest.describe(
       await browserAuth.loginWithCustomRole(FULL_KIBANA_SECURITY_ROLE);
     });
 
-    spaceTest.afterEach(async ({ apiServices, scoutSpace }) => {
+    spaceTest.afterEach(async ({ apiServices }) => {
       await apiServices.detectionRule.deleteAll();
       await apiServices.detectionAlerts.deleteAll();
-      await scoutSpace.savedObjects.cleanStandardList();
     });
 
     spaceTest(