fix: initialize max_events when clearing clip state

dispatcher.c

@@ -533,6 +533,7 @@ AppState reducer(AppState state, Action action) {
                 mclip->state = CLIP_EMPTY;
                 mclip->event_count = 0;
                 mclip->read_index = 0;
+                mclip->max_events = MAX_MIDI_EVENTS;
                 // events pointer should already be valid from init
             }