Fix the NLA setting the active object without exiting edit-mode

This is done by convention in the outliner and dope-sheet.

Missing edit-mode exit causes glitches with mixed object/edit-mode undo.

source/blender/editors/space_nla/nla_channels.c

@@ -161,7 +161,7 @@ static int mouse_nla_channels(
         }
 
         /* change active object - regardless of whether it is now selected [T37883] */
-        ED_object_base_activate(C, base); /* adds notifier */
+        ED_object_base_activate_with_mode_exit_if_needed(C, base); /* adds notifier */
 
         if ((adt) && (adt->flag & ADT_UI_SELECTED)) {
           adt->flag |= ADT_UI_ACTIVE;