Fix selector-max-compound-selectors with ignoreSelectors for class selectors

[ybiquitous]

Which issue, if any, is this issue related to?

Follow-up to PR #7544
See #7544 (comment)

Is there anything in the PR that needs further explanation?

Note that this change doesn't need any changelog item since the ignoreSelectors option is unreleased.

---

To fix the bug mentioned on #7544 (comment), this PR slightly changes the algorithm.

New algorithm:

1. Filter out ignoreSelectors in a selector at once, e.g.
   • .foo .bar > .ignored ➡️ .foo .bar >
   • .foo .bar > .ignored .baz ➡️ .foo .bar > .baz
   • .ignored > .foo .bar ➡️ > .foo .bar
2. Normalize combinators in the filtered nodes, e.g.
   • .foo .bar
   • .foo .bar > .baz
   • .foo .bar
3. Count compound selectors in the normalized selector, i.e. {compound_count} = {combinator_count} + 1
   • .foo .bar ➡️ 2
   • .foo .bar > .baz ➡️ 3
   • .foo .bar ➡️ 2

[changeset-bot]

⚠️ No Changeset found

Latest commit: debfdec

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[Mouvedia]

You can ignore my review if you are in a hurry.
What matters is that the behaviour is now consistent.
Hence this can be merged as is.

[Mouvedia]

Note that this change doesn't need any changelog item since the ignoreSelectors option is unreleased.

You could add & ([@ybiquitous](https://github.com/ybiquitous)) to

stylelint/CHANGELOG.md

Line 5 in 6f24e26

- Added: `ignoreSelectors: []` to `selector-max-compound-selectors` ([#7544](https://github.com/stylelint/stylelint/pull/7544)) ([@FloEdelmann](https://github.com/FloEdelmann)).

non-blocking

[ybiquitous]

You could add & ([@ybiquitous](https://github.com/ybiquitous)) to

Don't mind the mention in the changelog since I'll release it. 😅