Merge branch 'mw-add-filename-255-char-limit-to-direct-transfer' into 'master'

Add file name character length to known limitations for DT

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/141901



Merged-by: Evan Read <eread@gitlab.com>
Approved-by: Rodrigo Tomonari <rtomonari@gitlab.com>
Approved-by: Evan Read <eread@gitlab.com>
Reviewed-by: Rodrigo Tomonari <rtomonari@gitlab.com>
Co-authored-by: Rodrigo Tomonari <rtomonari@gitlab.com>
Co-authored-by: Martin Wortschack <mwortschack@gitlab.com>