Disable dns provider dropdown when busy

dashboard/src/components/DomainProviderForm.vue

@@ -17,6 +17,10 @@ defineProps({
     type: Boolean,
     default: false,
   },
+  disabled: {
+    type: Boolean,
+    default: false,
+  },
 });
 
 const provider = defineModel('provider');
@@ -104,7 +108,7 @@ function onGcdnsFileInputChange(event) {
   <div>
     <FormGroup>
       <label for="providerInput">{{ $t('domains.domainDialog.provider') }} <sup><a href="https://docs.cloudron.io/domains/#dns-providers" class="help" target="_blank"><i class="fa fa-question-circle"></i></a></sup></label>
-      <SingleSelect v-model="provider" @select="onProviderChange" :options="DomainsModel.providers" option-key="value" option-label="name" />
+      <SingleSelect v-model="provider" @select="onProviderChange" :disabled="disabled" :options="DomainsModel.providers" option-key="value" option-label="name" />
     </FormGroup>
 
     <!-- Route53 -->