Merge branch 'explicit_select_cte_query' into 'master'

Explicitly select columns for CTE query

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/122162



Merged-by: Abdul Wadood <awadood@gitlab.com>
Approved-by: Gosia Ksionek <mksionek@gitlab.com>
Approved-by: Abdul Wadood <awadood@gitlab.com>
Co-authored-by: Thong Kuah <tkuah@gitlab.com>

lib/gitlab/project_authorizations.rb

@@ -120,7 +120,9 @@ def linear_cte
         .merge(user.group_members)
         .merge(GroupMember.active_state)
 
-      union = Namespace.from_union([shared_groups, member_groups_with_ancestors])
+      union = Namespace
+        .select("namespaces.id, access_level")
+        .from_union([shared_groups, member_groups_with_ancestors])
 
       Gitlab::SQL::CTE.new(:linear_namespaces_cte, union)
     end