Merge branch '433482-invalidate-namespace-descendants-cache' into 'master'

Invalidate namespace descendants cache

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/141588



Merged-by: Omar Qunsul <oqunsul@gitlab.com>
Approved-by: Doug Stull <dstull@gitlab.com>
Approved-by: mo khan <mo@mokhan.ca>
Approved-by: Stan Hu <stanhu@gmail.com>
Reviewed-by: mo khan <mo@mokhan.ca>
Co-authored-by: Adam Hegyi <ahegyi@gitlab.com>