Jb Audras 8768607685 Grouped backports to the 6.1 branch.
- Media: Prevent CSRF setting attachment thumbnails.
- Embeds: Add protocol validation for WordPress Embed code.
- I18N: Introduce sanitization function for locale.
- Editor: Ensure block comments are of a valid form.
- Editor: Remove shortcode support from block templates.

Merges [55760-55764] to the 6.1 branch.
Props dd32, isabel_brison, martinkrcho, matveb, ocean90, paulkevan, peterwilsoncc, timothyblynjacobs, xknown, youknowriad.



git-svn-id: https://develop.svn.wordpress.org/branches/6.1@55771 602fd350-edb4-49c9-b593-d223f7449a82
2023-05-16 15:13:50 +00:00
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