Fix: Footnotes block editing in sync patterns

[dhruvikpatel18]

Closes #60982

What?

Fix Footnotes block editing in sync patterns

Why?

Currently, when a Footnotes block is added to a Sync Pattern, users cannot edit the footnotes from either the Post/Page content or the Pattern editor. This significantly limits the usability of footnotes in reusable patterns.

Testing Instructions

1. Create a new page or post
2. Add a Footnotes block to your content
3. Create a Group block containing the Footnotes block
4. Convert the Group block to a Sync Pattern
5. Verify you can edit footnotes:
   • In the original post/page
   • In the Sync Pattern
   • In other posts using the same pattern

Screenshots or screencast

Before

FootnotesBefore.mov

After

FootnotesAfter.mov

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