Merge branch '393324-support-for-diagrams-net-in-offline-environments' into 'master'

Support for Diagrams.net (formerly Draw.io) in offline environments

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/116281



Merged-by: Himanshu Kapoor <info@fleon.org>
Approved-by: Himanshu Kapoor <info@fleon.org>
Approved-by: Diogo Frazão <dfrazao@gitlab.com>
Approved-by: Vladlena Shumilo <vshumilo@gitlab.com>
Reviewed-by: Vitali Tatarintev <vtatarintev@gitlab.com>
Co-authored-by: ChevronTango <8999861-ChevronTango@users.noreply.gitlab.com>
Co-authored-by: Edward Brough <edward.brough@gmail.com>
Co-authored-by: Marcin Sedlak-Jakubowski <msedlakjakubowski@gitlab.com>