Customizer: Remove date filter from the Header/Background Image upload frames.

Adds an option to `wp.media.view.AttachmentsBrowser` to hide the date filter added in [29813].

Merges [30872] to the 4.1 branch.

See #30689.

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git-svn-id: http://core.svn.wordpress.org/branches/4.1@30905 1a063a9b-81f0-0310-95a4-ce76da25c4cd