Bug 302433 – Implement name only container queries

• Status: RESOLVED
• Resolution: FIXED
• Component: CSS

[Adam Argyle]

WPTs https://wpt.fyi/results/css/css-conditional/container-queries/query-container-name.html?label=master&label=experimental&aligned&q=container-name

```
.example { 
  container-name: --foo 
}

@container --foo { 
  #target { 
    color: green 
  } 
}
```

this subtle feature has high value, enabling many meaningful usecases.

authors expressing interest:
- https://blog.kizu.dev/named-container-presence-check/
- https://nerdy.dev/components-can-know

[Anthony Frehner]

I'm hoping to make the patch for this.

[Radar WebKit Bug Importer]

<rdar://problem/164648718>

[EWS]

Committed 304388@main (6b8d8d4d09fe): <https://commits.webkit.org/304388@main>

Reviewed commits have been landed. Closing PR #54667 and removing active labels.