Tonya Mork ba7d3a52b1 Themes: Make block themes support HTML5 by default.
For block themes, [52369] added HTML5 support for `'comment-list'`, `'comment-form'`, `'style'`, and `'script'`. However, when sites upgrade to 5.9 with non-block content such as a gallery and caption, the markup was not HTML5. 

This commit adds full HTML5 theme feature support for block themes. Non-block content such as a `[gallery]` and `[caption]` shortcodes will natively be in HMTL5 markup without block themes needing to specifically add `add_theme_support( 'html5, .. )` to the theme. 

Follow-up to [24417], [27302], [34261], [52369], [52383], [52386].

Props @joyously, costdev, hellofromTonya, audrasjb, Mamaduka, ocean90.
Fixes #54731. See #54597.

git-svn-id: https://develop.svn.wordpress.org/trunk@52439 602fd350-edb4-49c9-b593-d223f7449a82
2022-01-04 18:38:52 +00:00
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2022-01-04 05:37:25 +00:00