Builder fix broken styles and other stuff

web-frontend/modules/builder/components/theme/ThemeConfigBlock.vue

@@ -7,6 +7,7 @@
   >
     <component
       :is="themeConfigBlockType.component"
+      ref="themeConfigBlockForm"
       :preview="preview"
       :theme="theme"
       :extra-args="extraArgs"
@@ -41,5 +42,13 @@ export default {
       default: true,
     },
   },
+  methods: {
+    reset() {
+      this.$refs.themeConfigBlockForm.reset()
+    },
+    isFormValid() {
+      return this.$refs.themeConfigBlockForm.isFormValid()
+    },
+  },
 }
 </script>