chore: use a single Progress instance for expect

[dgozman]

In the new strict progress mode, we can skip progress.race() calls and thus avoid being interrupted by the progress.

To support legacy mode, guarded by env.PLAYWRIGHT_LEGACY_TIMEOUTS, two new methods progress.legacyDisableTimeout() and progress.legacyEnableTimeout() are implemented. This will go away as soon as legacy mode is removed.

Closes #36236. References #35987.

[github-actions]

Test results for "tests 1"

3 failed
❌ [playwright-test] › runner.spec.ts:118:5 › should ignore subprocess creation error because of SIGINT @macos-latest-node18-1
❌ [playwright-test] › reporter-html.spec.ts:2890:5 › created › execSync doesnt produce a second stdout attachment @macos-latest-node18-2
❌ [webkit-library] › library/video.spec.ts:411:5 › screencast › should capture css transformation @webkit-ubuntu-22.04-node18

4 flaky

⚠️ [firefox-library] › library/inspector/cli-codegen-1.spec.ts:986:7 › cli codegen › should not throw csp directive violation errors @firefox-ubuntu-22.04-node18
⚠️ [playwright-test] › ui-mode-test-watch.spec.ts:145:5 › should watch all @ubuntu-latest-node20-1
⚠️ [webkit-page] › page/page-screenshot.spec.ts:345:5 › page screenshot › should work while navigating @webkit-ubuntu-22.04-node18
⚠️ [playwright-test] › ui-mode-test-watch.spec.ts:145:5 › should watch all @windows-latest-node18-1

39465 passed, 823 skipped
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Merge workflow run.