fix(front): add missing spacer

front/src/components/federation/LibraryWidget.vue

@@ -12,6 +12,7 @@ import Button from '~/components/ui/Button.vue'
 import Section from '~/components/ui/Section.vue'
 import Loader from '~/components/ui/Loader.vue'
 import Alert from '~/components/ui/Alert.vue'
+import Spacer from '~/components/ui/Spacer.vue'
 
 import useErrorHandler from '~/composables/useErrorHandler'