refactor(core): make the event manager a bit easier to read

app/src/event_manager.c

@@ -22,13 +22,13 @@ int zmk_event_manager_handle_from(zmk_event_t *event, uint8_t start_index) {
     uint8_t len = __event_subscriptions_end - __event_subscriptions_start;
     for (int i = start_index; i < len; i++) {
         struct zmk_event_subscription *ev_sub = __event_subscriptions_start + i;
-        if (ev_sub->event_type == event->event) {
+        if (ev_sub->event_type != event->event) {
+            continue;
+        }
         ret = ev_sub->listener->callback(event);
-            if (ret < 0) {
-                LOG_DBG("Listener returned an error: %d", ret);
-                goto release;
-            } else if (ret > 0) {
         switch (ret) {
+        case ZMK_EV_EVENT_BUBBLE:
+            continue;
         case ZMK_EV_EVENT_HANDLED:
             LOG_DBG("Listener handled the event");
             ret = 0;
@@ -38,8 +38,9 @@ int zmk_event_manager_handle_from(zmk_event_t *event, uint8_t start_index) {
             event->last_listener_index = i;
             // Listeners are expected to free events they capture
             return 0;
-                }
-            }
+        default:
+            LOG_DBG("Listener returned an error: %d", ret);
+            goto release;
         }
     }