Media Modal: 

* the Image Details frame does not have a menu, indicate that by setting `menu: false` when adding states.
* mimic the default router rendering by toggling a `hide-menu` class on the frame when the region for menu is `null`
* remove the dead render code for the Image Details frame

See #29339.

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git-svn-id: http://core.svn.wordpress.org/trunk@29387 1a063a9b-81f0-0310-95a4-ce76da25c4cd