feat(accordion): support nested accordion

[tekno0ryder]

Closes #16732

Support rare case of using nested accordions

Changelog

Changed

• Changed active css selector from descendant combinator that targets all descendants regardless of their level to child combinator (>) that targets only the direct children.

Testing / Reviewing

• Unit test: Expanding parent shouldn't expand children accordion + Expand children works
• Video

Screen.Recording.2024-07-09.at.11.45.40.PM.mov

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[tekno0ryder]

I have read the DCO document and I hereby sign the DCO.

[Gururajj77]

Hey @tekno0ryder ! thanks for your contribution, could you please setup a test story, that can be excluded later if we approve it??

[tekno0ryder]

Hey @tekno0ryder ! thanks for your contribution, could you please setup a test story, that can be excluded later if we approve it??

Hi! please find preview story here

[guidari]

LGTM! Thanks for the contribution! 🚀

Please don't forget to remove the Test stories before merging it, since it's something that Carbon don't formally support.

[tekno0ryder]

@alisonjoseph One more review pls 👀 🙏