fix(js/useSortedKeys): don't compare named properties with nameless ones

[Conaclos]

Summary

Fix #6536

The bug was not related to the implementation of the String collator that we fixed in #5775.
Instead, this is coming from the implementation of useSOrtedKeys itself.

Actually I had suspicions about the current implementation of the rule. Notably about returning Equal in ObjectMmeber::cmp when we didn't manage to retrieve one of the name.
The bug is actually coming from exactly this.

The property without name is the code provided in #6536 is the object spread.
Reading the rule description, I noticed that the documentation asserts that a chunk/group of property should be sorted until a spread / bogus node / property without name is found.

I changed the implementation to match exactly this.
We no longer push an object spread or any property without name or an unreachable name.
This solves the issue.

json/useSortedKeys and useSOrtedAttributes have also a similar issue. However, this should be hard to trigger because we need bogus nodes. I will fix these rules in future PRs.

Also, I took the opportunity of switching to a stable sort in order to keep the relative order between two properties. This is useful when we sort an object with a getter and a setter with an identical name: we guarantee that their relative order doesn't change.

I wonder if we should not encode a total order between a getter and a setter: the action could then always sort the getter before the setter. This could overlap with useAdjacentGetterSetter's action. However, this looks like an expected behavior for useSortedKeys?

I was also able to remove a FIXME :)

Test Plan

[changeset-bot]

🦋 Changeset detected

Latest commit: a39aeeb

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 13 packages

Name	Type
@biomejs/biome	Patch
@biomejs/cli-win32-x64	Patch
@biomejs/cli-win32-arm64	Patch
@biomejs/cli-darwin-x64	Patch
@biomejs/cli-darwin-arm64	Patch
@biomejs/cli-linux-x64	Patch
@biomejs/cli-linux-arm64	Patch
@biomejs/cli-linux-x64-musl	Patch
@biomejs/cli-linux-arm64-musl	Patch
@biomejs/wasm-web	Patch
@biomejs/wasm-bundler	Patch
@biomejs/wasm-nodejs	Patch
@biomejs/backend-jsonrpc	Patch

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[codspeed-hq]

CodSpeed Performance Report

Merging #6551 will improve performances by 11.26%

_{Comparing conaclos/useSortedKeys6536 (a39aeeb) with main (f62e748)}

Summary

⚡ 1 improvements
✅ 114 untouched benchmarks

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
⚡	pure_9395922602181450299.css[cached]	3.4 ms	3 ms	+11.26%