Merge branch '425267-add-prev-blame-link' into 'master'

Add previous blame link to blob blame

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/135820



Merged-by: Miranda Fluharty <mfluharty@gitlab.com>
Approved-by: Nataliia Radina <nradina@gitlab.com>
Approved-by: Miranda Fluharty <mfluharty@gitlab.com>
Co-authored-by: Jacques <jerasmus@gitlab.com>