applink: do not send label when not set

dashboard/src/components/ApplinkDialog.vue

@@ -4,7 +4,7 @@ import { useI18n } from 'vue-i18n';
 const i18n = useI18n();
 const t = i18n.t;
 
-import { computed, ref, useTemplateRef } from 'vue';
+import { ref, useTemplateRef } from 'vue';
 import { Dialog, FormGroup, InputDialog, MultiSelect, Radiobutton, TagInput, TextInput } from '@cloudron/pankow';
 import { API_ORIGIN } from '../constants.js';
 import { getDataURLFromFile } from '../utils.js';
@@ -64,11 +64,12 @@ async function onSubmit() {
   busy.value = true;
 
   const data = {
-    label: label.value,
     upstreamUri: upstreamUri.value,
     tags: tags.value,
   };
 
+  if (label.value) data.label = label.value;
+
   data.accessRestriction = null;
   if (accessRestrictionOption.value === 'groups') {
     data.accessRestriction = { users: [], groups: [] };