WM: ensure is_repeat isn't set for mouse-move events

Follow up to d782bad62d

Also clear this for simulated events.

source/blender/makesrna/intern/rna_wm_api.c

@@ -632,6 +632,7 @@ static wmEvent *rna_Window_event_add_simulate(wmWindow *win,
   wmEvent e = *win->eventstate;
   e.type = type;
   e.val = value;
+  e.is_repeat = false;
   e.x = x;
   e.y = y;
   /* Note: KM_MOD_FIRST, KM_MOD_SECOND aren't used anywhere, set as bools */

source/blender/windowmanager/intern/wm_event_system.c

@@ -3402,6 +3402,7 @@ void wm_event_do_handlers(bContext *C)
       tevent.type = MOUSEMOVE;
       tevent.prevx = tevent.x;
       tevent.prevy = tevent.y;
+      tevent.is_repeat = false;
       wm_event_add(win, &tevent);
       win->addmousemove = 0;
     }