[Docs]: incomplete reporter unions, missing trace/video modes, and version annotation errors

[Docs]: incomplete reporter lists in unions, missing trace/video modes, and version annotation errors

Page(s)

• https://playwright.dev/docs/api/class-testconfig (JS: https://playwright.dev/docs/test-api? not applicable)
• https://playwright.dev/docs/test-api/class-testconfig (Python/C#/Java TestConfig)
• https://playwright.dev/docs/test-api/class-fullconfig
• https://playwright.dev/docs/test-cli (merge-reports)
• https://playwright.dev/docs/api/class-cdpsession
• https://playwright.dev/docs/api/class-cdpsessionevent
• https://playwright.dev/docs/api/class-apirequest
• https://playwright.dev/docs/api/class-browser
• https://playwright.dev/docs/api/class-browsertype
• https://playwright.dev/docs/api/class-locator
• https://playwright.dev/docs/api/class-elementhandle
• https://playwright.dev/docs/api/class-page
• https://playwright.dev/docs/emulation
• https://playwright.dev/docs/trace-viewer
• https://playwright.dev/docs/videos

Description

Several API doc unions/lists are incomplete or carry wrong version annotations:

1. blob missing from BuiltInReporter unions. The TestConfig.reporter and FullConfig.reporter doc unions (and the FullConfig.reporter type override in utils/generate_types/overrides-test.d.ts) omit blob, although it is part of builtInReporters and ReporterDescription. As a result, reporter: ['blob'] fails type checking in the generated @playwright/test types.
2. perfetto missing from the merge-reports --reporter list in test-cli-js.md.
3. Missing trace modes: retain-on-first-failure and retain-on-failure-and-retries are absent from the trace option union in TestConfig/FullConfig docs (both shipped and announced in release notes).
4. Missing video modes: on-all-retries, retain-on-first-failure, and retain-on-failure-and-retries are absent from the video option union.
5. FullConfig.configFile is documented as an empty string when no config file exists; it is actually undefined.
6. colorScheme also supports 'no-preference', missing from the docs (emulation.md / TestConfig).
7. maskColor version annotation: listed as since v1.34 on ElementHandle.screenshot/Locator.screenshot/Page.screenshot; the shared template says v1.35 (release notes confirm v1.35) — the local since overrides should be removed.
8. Malformed since strings: v.1.30 and bare 1.30/1.46 instead of v1.30/v1.46 in class-cdpsession.md, class-cdpsessionevent.md, class-apirequest.md, class-browser.md, class-browsertype.md (inconsistent rendering across languages).

I'd like to work on this myself.

Start with the listed TestConfig and FullConfig documentation, test-cli-js.md, emulation.md, and the class pages containing the version annotations; also inspect utils/generate_types/overrides-test.d.ts. Compare each union, reporter list, value, and since annotation with the issue description, then verify that all listed documentation and type definitions consistently show the corrected values.