Hotfix: correct issues from PRs rollout (#10993)

* fix(various): correct issues from PRs rollout
1. Send Gems modal opens from profiles again
2. Contributor titles appear on hover again
3. Tags dropdown in tasks appears again
4. Only user's own @mentions get highlighted again

* fix(test): correct order of css classes in expect

website/client/components/tasks/taskModal.vue

@@ -1009,7 +1009,7 @@ export default {
       }
     },
     handleClick (e) {
-      if (this.$refs.popup && !this.$refs.popup.$el.contains(e.target)) {
+      if (this.$refs.popup && !this.$refs.popup.$el.parentNode.contains(e.target)) {
         this.closeTagsPopup();
       }
     },