fix(tracing): resourceOverrides issues

[dgozman]

• For resource overrides with a ref, meaning they have not changed the value, actually follow the ref.
• Always report CSSOM-touched stylesheets in the overrides, to avoid rendering non-edited content when there were no recent changes in the stylesheet.
• Honor the value of styleSheet.disabled.
• Invalidate upon styleSheet.disabled assignment.

[github-actions]

Test results for "MCP"

1 failed
❌ [chrome] › mcp/video.spec.ts:63 › should work with recordVideo (persistent) @mcp-macos-15

2821 passed, 116 skipped

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Merge workflow run.

[github-actions]

Test results for "tests 1"

7 failed
❌ [default] › debug-tests.spec.ts:516 › should not pause at the end of a setup test @vscode-extension
❌ [default-reuse] › debug-tests.spec.ts:516 › should not pause at the end of a setup test @vscode-extension
❌ [default-trace] › debug-tests.spec.ts:380 › should run global setup before debugging @vscode-extension
❌ [default-trace] › debug-tests.spec.ts:516 › should not pause at the end of a setup test @vscode-extension
❌ [playwright-test] › playwright.spec.ts:877 › page.pause() should disable test timeout @macos-latest-node20
❌ [playwright-test] › reporter-html.spec.ts:3311 › merged › shard chart @macos-latest-node20
❌ [playwright-test] › reporter-html.spec.ts:156 › created › should include image diff @macos-latest-node20

5 flaky

⚠️ [chromium-library] › library/beforeunload.spec.ts:130 › should support dismissing the dialog multiple times `@ubuntu-22.04-chromium-tip-of-tree`
⚠️ [chromium-library] › library/popup.spec.ts:258 › should not throw when click closes popup `@chromium-ubuntu-22.04-node24`
⚠️ [chromium-library] › library/headful.spec.ts:233 › should click in OOPIF `@chromium-ubuntu-22.04-node22`
⚠️ [webkit-page] › page/page-network-request.spec.ts:288 › should parse the data if content-type is application/x-www-form-urlencoded `@webkit-ubuntu-22.04-node20`
⚠️ [playwright-test] › runner.spec.ts:124 › should ignore subprocess creation error because of SIGINT `@macos-latest-node20`

34404 passed, 696 skipped

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Merge workflow run.

[pavelfeldman]

Why are we touching this?

[dgozman]

Why are we touching this?

I stumbled upon the bug when working on UI coverage and spent quite some time figuring things out.