test: unflake a few tests

[dgozman]

No description provided.

[github-actions]

Test results for "tests 1"

1 failed
❌ [playwright-test] › reporter-html.spec.ts:705:5 › merged › should use file-browser friendly extensions for buffer attachments based on contentType

8 flaky

⚠️ [chromium] › library/tracing.spec.ts:408:14 › should produce screencast frames crop
⚠️ [chromium] › page/page-event-request.spec.ts:101:3 › should report navigation requests and responses handled by service worker
⚠️ [firefox] › library/tracing.spec.ts:239:5 › should not include trace resources from the previous chunks
⚠️ [chromium] › library/tracing.spec.ts:239:5 › should not include trace resources from the previous chunks
⚠️ [chromium] › page/page-event-request.spec.ts:101:3 › should report navigation requests and responses handled by service worker
⚠️ [playwright-test] › ui-mode-test-progress.spec.ts:22:5 › should update trace live
⚠️ [chromium] › components/splitView.spec.tsx:65:5 › drag resize
⚠️ [webkit] › page/page-wait-for-navigation.spec.ts:85:3 › should work with clicking on links which do not commit navigation

25846 passed, 603 skipped
✔️✔️✔️

Merge workflow run.