chore: revert several test changes

Author: ranst91

typescript-sdk/apps/dojo/e2e/test-isolation-helper.ts

@@ -23,12 +23,9 @@ export async function waitForAIResponse(page: Page, timeout: number = 90000) {
   await page.waitForFunction(
     () => {
       // Look for common AI loading indicators
-      const loadingIndicators = [
-        ...document.querySelectorAll(
+      const loadingIndicators = document.querySelectorAll(
         '[data-testid*="loading"], .loading, .spinner'
-        ),
-        ...document.querySelectorAll('.copilotKitActivityDot')
-      ];
+      );
       return loadingIndicators.length === 0;
     },
     { timeout }