Revert [28613] and [28664]. A good idea, but too much BC baggage.

See #28099.



git-svn-id: https://develop.svn.wordpress.org/trunk@28783 602fd350-edb4-49c9-b593-d223f7449a82
Further adjustments after [8364], listen to an editor instance event instead of delegating a body click when attempting to pause all players belonging to a particular MCE view.

Props avryl.
Fixes #27971.


git-svn-id: https://develop.svn.wordpress.org/trunk@28784 602fd350-edb4-49c9-b593-d223f7449a82