Merge branch '24882-allow-users-of-subprojects-to-be-selected-in-board-scope' into 'master'

Added descendants to assignee query in board scope

See merge request gitlab-org/gitlab!74139

app/assets/javascripts/graphql_shared/queries/group_users_search.query.graphql

@@ -4,7 +4,7 @@
 query groupUsersSearch($search: String!, $fullPath: ID!) {
   workspace: group(fullPath: $fullPath) {
     id
-    users: groupMembers(search: $search, relations: [DIRECT, INHERITED]) {
+    users: groupMembers(search: $search, relations: [DIRECT, DESCENDANTS, INHERITED]) {
       nodes {
         user {
           ...User