wpview: tinymce.each only stops when returning false, only get all the view offsets when clicking next to the body

[iseulde]

Currently, whenever there's a click in the editor, there wil be always some expensive calculations from the wpview plugin.

1. Reduce them to when the click is outside the body.
2. return alone doesn't actually do anything in a tinymce.each function. return false when the click is above a view or next to a view to stop the loop.

[azaozz]

In 31143:

TinyMCE wpView: when clicking in the editor optimize the caret placement before or after a view. Props avryl, fixes #30938.