Some plugins remove the Custom Fields meta box, particularly when they provide functionality that replaces it. The block editor would correctly not display this meta box in these circumstances, but it still showed the option to display or hide it.
Props pento, noisysocks.
See #45282.
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Adds the `wp_set_script_translations` function which registers translations for a JavaScript file. This function takes a handle, domain and optionally a path and ensures JavaScript translation files are loaded if they exist.
Props atimmer, omarreiss, nerrad, swissspidy, ocean90.
Fixes#45103.
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