Core Data: Update '__unstableBase' entity types

[Mamaduka]

What?

This is a follow-up to #69106.

PR adds type definitions of new __unstableBase entity properties introduced in #69106.

Testing Instructions

CI checks are green.

[github-actions]

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[github-actions]

Flaky tests detected in 02514cb.
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/13828893520
📝 Reported issues:

• [Flaky Test] image inserted via link should appear in the frontend published post content #52030 in /test/e2e/specs/editor/blocks/image.spec.js