Fix no-descending-specificity false positives for nested selectors

[romainmenke]

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

Closes #7723

Is there anything in the PR that needs further explanation?

We didn't have coverage for nested selectors where the nested part is the same while the parent is different.

I should have double checked this when refactoring this rule.

I am certain that this case is very common.
Do we have capacity to ship a patch in the next few days?

[changeset-bot]

🦋 Changeset detected

Latest commit: 1f5c69e

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

This PR includes changesets to release 1 package

Name	Type
stylelint	Patch

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[Mouvedia]

This LGTM but could you update line 132 to be

 * @param {import('postcss-selector-parser').Selector} resolvedSelectorNode

?

[Mouvedia]

I am certain that this case is very common.
Do we have capacity to ship a patch in the next few days?

We have discussed this with @ybiquitous. He's around thankfully but even if he wasn't you could release in his absence.

[ybiquitous]

@romainmenke Thanks for the quick patch! LGTM 👍🏼

If you want, I can grant you permission to publish the stylelint package (you don't have it, right?).

I have time to release a new version within a few days, though.

[romainmenke]

It's fine that I don't have publishing access.
Users can stay on 16.5 for now.

Having a next patch out in the next few days is still a really quick response, thank you 🙇

Also thank you for the reviews!

[romainmenke]

This LGTM but could you update line 132 to be
* @param {import('postcss-selector-parser').Selector} resolvedSelectorNode

That function is correct as it is now imho.

This function does transform the provided selector but it is not this transform that was key to this bug. It was which selector was used as the reference.

The transform could be useful for any selector, even those not produced by resolving nested selectors or when the result isn't used as a reference.