Fix NoMethodError for BlameController

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/117434



Merged-by: Niko Belokolodov <nbelokolodov@gitlab.com>
Approved-by: Niko Belokolodov <nbelokolodov@gitlab.com>
Approved-by: Siddharth Dungarwal <sdungarwal@gitlab.com>
Co-authored-by: Vasilii Iakliushin <viakliushin@gitlab.com>