Blender Git Loki

Fix T73675: Leaving exit mode tags all objects for update

This is an oversight of a fix for T69834, where I didn't realize the
ED_object_editmode_exit_ex() function is called for all objects as an
opposite of only the ones which were in edit mode.

Seems a simple fix: just move tag into a check that object was in the
edit mode prior to tag.

Differential Revision: https://developer.blender.org/D6808