fix: remove nested items from favorites view on unfavorite

[kristian-zendato]

• Resolves: [Bug]: The unfavorite action on file, doesnt remove the file from the favorite folder #55280

Summary

• Unfavoriting a nested file or folder from the Favorites view left it in the list without a star until reload.
• The action only emitted files:node:deleted when node.dirname === '/'. That is the item’s real parent path, not the Favorites view directory. Favorites at / is a virtual listing of all favorites, so nested items (e.g. /Documents/vacation.txt) never left the list.
• This now checks the current folder instead (folder.path === '/'). Nested items are removed when unfavoriting at the Favorites root. Opening a real folder from Favorites still only removes the star.

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)
• Labels added where applicable (ex: bug/enhancement, 3. to review, feature component)
• Milestone added for target branch/version (ex: 32.x for stable32)

AI (if applicable)

• The content of this PR was partly or fully generated using AI