fix: do not prune selectors like :global(.foo):has(.scoped)

[7nik]

Fixes #14910

The issue occurs only when :has() targets at a component's root element and because include_self is false.
I came to the conclusion that this is the same case as :root:has(.scoped).

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[dummdidumm]

thank you!

[dummdidumm]

thank you!