Add Popover API support

[Semigradsky]

Summary

Closes #27479

I tried to update fixtures/attribute-behavior/AttributeTableSnapshot.md but I got error in browser console:

Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'unstable_cancelCallback')

[react-sizebot]

Comparing: dddfe68...3578155

Critical size changes

Includes critical production bundles, as well as any change greater than 2%:

Name	+/-	Base	Current	+/- gzip	Base gzip	Current gzip
oss-stable/react-dom/cjs/react-dom.production.min.js	=	174.46 kB	174.47 kB	+0.01%	54.27 kB	54.28 kB
oss-experimental/react-dom/cjs/react-dom.production.min.js	=	176.31 kB	176.32 kB	+0.01%	54.88 kB	54.88 kB
facebook-www/ReactDOM-prod.classic.js	=	564.48 kB	564.50 kB	=	99.37 kB	99.38 kB
facebook-www/ReactDOM-prod.modern.js	=	548.21 kB	548.23 kB	=	96.44 kB	96.45 kB

Significant size changes

Includes any change greater than 0.2%:

(No significant changes)

Generated by 🚫 dangerJS against 3578155

[jackpope]

@Semigradsky thanks for the updates here. #27717 should fix the error from the fixtures app. If you rebase on main you should be able to update the attributes fixture now

[Semigradsky]

@jackpope Now in main branch I have new error in console:

App.js:359 Uncaught (in promise) Error: Tag mismatch. Expected: img
    at getRenderedAttributeValue (App.js:359:1)
    at getRenderedAttributeValues (App.js:416:1)
    at prepareState (App.js:454:1)
    at App._callee$ (App.js:823:1)
    at tryCatch (runtime.js:65:1)
    at Generator.invoke [as _invoke] (runtime.js:303:1)
    at prototype.<computed> [as next] (runtime.js:117:1)
    at step (fetch.js:461:1)
    at fetch.js:461:1

Document title is src (string)

[jackpope]

The img tag error appears to be flaky. I get it on some loads but others complete successfully. We should fix this but for the sake of getting this PR merged soon, could you try a few more attempts at recording the fixture here?

[Semigradsky]

@jackpope I have tried several times (more than 5 already) and I always have this error.

[acusti]

i’m very excited for this to land! the browser console errors and linting errors are painful. @Semigradsky @jackpope do either of you know how much of a lift it would be to extend support to include the new toggle and beforetoggle events associated with the Popover API?

[eps1lon]

Alternate with proper overrides for the attribute-behavior fixture and support for the beforetoggle and toggle events: #27981

[github-actions]

This pull request has been automatically marked as stale. If this pull request is still relevant, please leave any comment (for example, "bump"), and we'll keep it open. We are sorry that we haven't been able to prioritize reviewing it yet. Your contribution is very much appreciated.

[eps1lon]

Fixed in #27981