Merge branch '437767-code-indentation' into 'master'

Do not remove indentation when pasting in code block

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/143793



Merged-by: Scott Hampton <shampton@gitlab.com>
Approved-by: Désirée Chevalier <dchevalier@gitlab.com>
Approved-by: James Rushford <jrushford@gitlab.com>
Approved-by: Scott Hampton <shampton@gitlab.com>
Co-authored-by: Himanshu Kapoor <hkapoor@gitlab.com>