Merge branch '501403-ignore-revisisions-blob-errors' into 'master'

Raise specific errors for blames ignoring certain revisions

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/182824



Merged-by: Kerri Miller <kerrizor@kerrizor.com>
Approved-by: Hunter Stewart <hustewart@gitlab.com>
Approved-by: Kerri Miller <kerrizor@kerrizor.com>
Co-authored-by: j.seto <jseto@gitlab.com>