- Embeds: Ensure that the title attribute is set correctly on embeds.
- Editor: Prevent HTML decoding on by setting the proper editor context.
- Formatting: Ensure that `wp_validate_redirect()` sanitizes a wider variety of characters.
- Themes: Ensure a broken theme name is returned properly.
- Administration: Add a new filter to extend `set-screen-option`.
Merges [47948-47951] to the 5.3 branch.
Props xknown, sstoqnov, vortfu, SergeyBiryukov, whyisjake.
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User: Invalidate `user_activation_key` on password update.
Query: Ensure that only a single post can be returned on date/time based queries.
Block Editor: Coding standards, properly escape class names.
Cache API: Ensure proper escaping around the stats method in the cache API.
Formatting: Expand `sanitize_file_name` to have better support for utf8 characters.
Brings the changes in [47633], [47634], [47635], [47636], [47637], and [47638] to the 5.4 branch.
Props: aduth, batmoo, ehti, ellatrix, jorgefilipecosta, nickdaugherty, noisysocks, pento, peterwilsoncc, sergeybiryukov, sstoqnov, talldanwp, westi, westonruter, whyisjake, whyisjake, xknown.
Built from https://develop.svn.wordpress.org/branches/5.3@47644
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