Deflake heavy-ads by changing the target page

Bug: 375892666
Change-Id: I6e405257dd4ce6352adf5c8e74ed284c398db5c4
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/5968111
Reviewed-by: Alex Rudenko <[email protected]>
Commit-Queue: Alex Rudenko <[email protected]>
Auto-Submit: Paul Irish <[email protected]>

Author: paulirish

test/e2e/issues/heavy-ad-issues_test.ts

@@ -14,7 +14,7 @@ import {
 
 describe('Heavy Ad issue', () => {
   beforeEach(async () => {
-    await goToResource('empty.html');
+    await goToResource('elements/quirks-mode.html');
   });
 
   it('should display correct information', async () => {