insert/edit link dialog does not close

[ritterml]

New Insert/Edit Link dialog is obtrusive and doggy.

When I click gear to insert link then insert the link the dialog stays, even when I click elsewhere in the editor.

[azaozz]

Seems like a duplicate of #36781. The symptoms are different but the bug is with not resetting the state.

[azaozz]

In 37906:

TinyMCE, inline link dialog:

• Reset the internal state when doing unlink, pressing Escape, and clicking elsewhere in the editor.
• Add the unlink shortcut from the wplink plugin as it triggers the new wp_unlink command.

Fixes #36781, #36732, #37153.

[azaozz]

#37065 was marked as a duplicate.