Fixed new widget extensions not showing

Moves the computed property to the correct place.

app/assets/javascripts/vue_merge_request_widget/mr_widget_options.vue

@@ -207,6 +207,12 @@ export default {
     hasAlerts() {
       return this.mr.mergeError || this.showMergePipelineForkWarning;
     },
+    shouldShowExtension() {
+      return (
+        window.gon?.features?.refactorMrWidgetsExtensions ||
+        window.gon?.features?.refactorMrWidgetsExtensionsUser
+      );
+    },
   },
   watch: {
     'mr.machineValue': {

ee/app/assets/javascripts/vue_merge_request_widget/mr_widget_options.vue

@@ -192,12 +192,6 @@ export default {
         this.fetchLoadPerformance();
       }
     },
-    shouldShowExtension() {
-      return (
-        window.gon.features.refactorMrWidgetsExtensions ||
-        window.gon.features.refactorMrWidgetsExtensionsUser
-      );
-    },
   },
   methods: {
     registerLoadPerformance() {