Stage 4 tracking

This proposal achieved stage 3 at the November 2022 meeting. This is a tracking issue for getting stage 4.

- [x] committee consensus
- [x] open PR to the spec - [PR](https://github.com/tc39/ecma262/pull/3306)
  - [x] editors have approved the PR
- [x] write test262 tests - [issue](https://github.com/tc39/test262/issues/3738), [PR](https://github.com/tc39/test262/pull/3966)
  - [x] merge test262 tests
- [x] at least two implementations
  - [x] JavaScriptCore: [issue](https://bugs.webkit.org/show_bug.cgi?id=254249) (shipping in [Safari 17](https://webkit.org/blog/14445/webkit-features-in-safari-17-0/))
  - [x] V8: [issue](https://bugs.chromium.org/p/v8/issues/detail?id=13556) (shipping in [Chrome 122](https://chromestatus.com/feature/6280344932450304))
  - [x] SpiderMonkey: [issue](https://bugzilla.mozilla.org/show_bug.cgi?id=1805038) (shipping in [Firefox 127](https://bugzilla.mozilla.org/show_bug.cgi?id=1868423))
  - [x] Serenity LibJS: [PR](https://github.com/SerenityOS/serenity/pull/16279)
- [x] significant in-the-field experience

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Stage 4 tracking #78

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