Minor bugfixes (#3338)

* Workaround linux firefox repeat issue

* Nullcheck onShow/onHide functions

apps/app-frontend/src/components/ui/modal/ModalWrapper.vue

@@ -43,7 +43,7 @@ function onModalHide() {
   if (props.showAdOnClose) {
     show_ads_window()
   }
-  props.onHide()
+  props.onHide?.()
 }
 </script>
 

apps/frontend/src/layouts/default.vue

@@ -965,10 +965,6 @@ async function onKeyDown(event) {
     return;
   }
 
-  if (!event.repeat) {
-    rCount.value = 0;
-  }
-
   if (event.key === "r") {
     rCount.value++;