noisysocks 7131a90b0a Widgets REST API: Fix non-multi widgets not appearing in wp_inactive_widgets
Registered widgets that do not extend WP_Widget should appear in the
wp_inactive_widgets sidebar by default. Having the widgets REST API call
retrieve_widgets() before serving any request ensures that this will happen.

This is a similar fix to [51235].

Fixes #53534.
Props zieladam, timothyblynjacobs.

Built from https://develop.svn.wordpress.org/trunk@51248


git-svn-id: http://core.svn.wordpress.org/trunk@50857 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2021-06-28 04:34:57 +00:00
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