fix(e2e): reduce task count in tag deletion test to prevent timeout

Reduce tasks from 10 to 5 in the bulk tag deletion sync test.
Creating and syncing 10 tasks was exceeding the 180s test timeout.
5 tasks still validates atomic tag deletion behavior.

e2e/tests/sync/supersync-models.spec.ts

@@ -444,7 +444,7 @@ test.describe('@supersync SuperSync Models', () => {
       await clientA.sync.setupSuperSync(syncConfig);
 
       const tagName = `BulkTag-${testRunId}`;
-      const taskCount = 10;
+      const taskCount = 5; // Reduced from 10 to speed up test
       const taskNames: string[] = [];
 
       // 1. Create tag first