Add share dialog for collections (#37986)

app/javascript/mastodon/features/ui/util/async-components.js

@@ -62,6 +62,12 @@ export function CollectionsEditor() {
   );
 }
 
+export function ShareCollectionModal() {
+  return import('../../collections/detail/share_modal').then(
+    module => ({default: module.CollectionShareModal})
+  );
+}
+
 export function Status () {
   return import('../../status');
 }