Sergey Biryukov 3c14324dc6 Code Modernization: Silence the deprecation warnings for missing return type in WP_Theme. ...

This fixes the "Deprecated: Return type of `WP_Theme::[METHODNAME]($offset)` should be compatible with `ArrayAccess::[METHODNAME](): type`" warnings on PHP 8.1.

PHP native interfaces now have declared return types and methods in classes implementing these interfaces need to either have the return type declared (in a covariant compatible manner with the PHP native interface method declaration), or need to silence the deprecation warning using the `#[ReturnTypeWillChange]` attribute.

Follow-up to [51517].

Props jrf.
See #53635.
Built from https://develop.svn.wordpress.org/trunk@51529


git-svn-id: http://core.svn.wordpress.org/trunk@51140 1a063a9b-81f0-0310-95a4-ce76da25c4cd

2021-08-02 22:31:56 +00:00

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