Edit Post: Refactor MetaBoxesSection to use data hooks

[Mamaduka]

What?

Refactors MetaBoxesSection from the legacy withSelect HoC to the useSelect hook, and collapses the file to a single named export (dropping the now-redundant default export). Updates the consumer and unit tests accordingly. No behavior change.

Testing Instructions

Smoke test metaboxes preferences, which I think also has e2e test coverage.

Use of AI Tools

Assisted By Claude.

[github-actions]

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Co-authored-by: Mamaduka <[email protected]>
Co-authored-by: ntsekouras <[email protected]>

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[github-actions]

Size Change: -53 B (0%)

Total Size: 7.51 MB

📦 View Changed

Filename	Size	Change
build/modules/content-types/index.min.js	159 kB	-14 B (-0.01%)
build/scripts/block-editor/index.min.js	381 kB	+4 B (0%)
build/scripts/edit-post/index.min.js	52.9 kB	-22 B (-0.04%)
build/scripts/edit-site/index.min.js	299 kB	-4 B (0%)
build/scripts/editor/index.min.js	474 kB	-17 B (0%)

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[github-actions]

Flaky tests detected in 7f4ff5a.
Some tests passed with failed attempts. The failures may not be related to this commit but are still reported for visibility. See the documentation for more information.

🔍 Workflow run URL: https://github.com/WordPress/gutenberg/actions/runs/28015474098
📝 Reported issues:

• [Flaky Test] Should save the changes #78689 in /test/e2e/specs/editor/plugins/wp-editor-meta-box.spec.js

[ntsekouras]

LGTM, thanks!