If `post_status` is passed to `WP_Query` as an array containing `'any'` and anything else, don't exclude the other values if they match when running `any`'s exclusion logic.

Adds unit tests.

Fixes #28007.

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Simplify the logic for determining `isset( $this->query['s'] )` after [28612], and don't limit this logic to just the main query.

Props SergeyBiryukov.
Fixes #11330.

Built from https://develop.svn.wordpress.org/trunk@28623


git-svn-id: http://core.svn.wordpress.org/trunk@28444 1a063a9b-81f0-0310-95a4-ce76da25c4cd
TinyMCE: remove margins from the image toolbar wrapper, props avryl, fixes #28389
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