Correct some modal repops (#11739)

* fix(modals): correct some repops

* fix(modals): also clean out "prev"

* refactor(modals): hide in dismiss event

website/client/src/components/payments/sendGemsModal.vue

@@ -294,7 +294,7 @@ export default {
       this.sendingInProgress = false;
     },
     close () {
-      this.$root.$emit('bv::hide::modal', 'send-gems');
+      this.$root.$emit('habitica::dismiss-modal', 'send-gems');
     },
   },
 };