Pattern Overrides: Parent selector not visible in toolbar when overridable block is selected

[artemiomorales]

Description

When overrides are enabled in a pattern and an overridable block is selected, the parent selector is not visible in the block toolbar, which is unexpected.

Reported by @annezazu in #59477 (comment).

Step-by-step reproduction instructions

1. Create a new synced pattern
2. Add a paragraph to the pattern
3. Enable instance overrides for the paragraph beneath 'Advanced' by giving it a name
4. Save the pattern and insert it into a post
5. Select the overridable paragrah — see that the parent selector in the toolbar is not visible.

Screenshots, screen recording, code snippet

parent.block.mov

Screen.Recording.2024-03-05.at.9.40.45.AM.mp4

Environment info

No response

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes