FIX: Add REST API filters to the Global Styles Revisions controller.

[patil-vipul]

Summary

This PR adds two standard WordPress REST API filters to the Global Styles Revisions controller: rest_global_styles_revision_query and rest_prepare_global_styles_revision.
Currently, WP_REST_Global_Styles_Revisions_Controller lacks the standard WordPress REST filters, likely an oversight since other revision controllers include them.

Changes Proposed

• Adds rest_global_styles_revision_query filter for query modification
• Adds rest_prepare_global_styles_revision filter for response data modification

Trac ticket: https://core.trac.wordpress.org/ticket/62742

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[github-actions]

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[github-actions]

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[github-actions]

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