input: Rewritten pointer constraints (#4889)

* rewritten constraints

* send pointer enter on activate if not pointer focus

* minor cleanup

* simulate movement on commit

* don't ignore oneshot prop

* various fixes

* dont send motion on confined

* update pos hint on region change

src/events/Events.hpp

@@ -65,10 +65,7 @@ namespace Events {
     DYNLISTENFUNC(keyboardMod);
     DYNLISTENFUNC(keyboardDestroy);
 
-    DYNLISTENFUNC(commitConstraint);
     LISTENER(newConstraint);
-    DYNLISTENFUNC(setConstraintRegion);
-    DYNLISTENFUNC(destroyConstraint);
 
     // Various
     LISTENER(requestMouse);