Add user to top of filtered search in epics

ee/app/assets/javascripts/boards/components/epic_filtered_search.vue

 <script>
 import BoardFilteredSearch from '~/boards/components/board_filtered_search.vue';
+import { TYPE_USER } from '~/graphql_shared/constants';
+import { convertToGraphQLId } from '~/graphql_shared/utils';
 import { __ } from '~/locale';
 import AuthorToken from '~/vue_shared/components/filtered_search_bar/tokens/author_token.vue';
 import LabelToken from '~/vue_shared/components/filtered_search_bar/tokens/label_token.vue';
@@ -46,6 +48,7 @@ export default {
           token: AuthorToken,
           unique: true,
           fetchAuthors: this.fetchAuthors,
+          preloadedAuthors: this.preloadedAuthors(),
         },
       ];
     },
@@ -75,6 +78,18 @@ export default {
         })
         .then(({ data }) => data.group?.labels.nodes || []);
     },
+    preloadedAuthors() {
+      return gon?.current_user_id
+        ? [
+            {
+              id: convertToGraphQLId(TYPE_USER, gon.current_user_id),
+              name: gon.current_user_fullname,
+              username: gon.current_username,
+              avatarUrl: gon.current_user_avatar_url,
+            },
+          ]
+        : [];
+    },
   },
 };
 </script>

ee/spec/frontend/boards/components/epic_filtered_search_spec.js

@@ -16,6 +16,13 @@ describe('EpicFilteredSearch', () => {
     });
   };
 
+  window.gon = {
+    current_user_id: '4',
+    current_username: 'root',
+    current_user_avatar_url: 'url',
+    current_user_fullname: 'Admin',
+  };
+
   afterEach(() => {
     wrapper.destroy();
   });
@@ -56,6 +63,9 @@ describe('EpicFilteredSearch', () => {
           token: AuthorToken,
           unique: true,
           fetchAuthors: wrapper.vm.fetchAuthors,
+          preloadedAuthors: [
+            { id: 'gid://gitlab/User/4', name: 'Admin', username: 'root', avatarUrl: 'url' },
+          ],
         },
       ];
       expect(wrapper.find(BoardFilteredSearch).props('tokens')).toEqual(tokens);