Merge branch 'mg-fix-plaintext-request-new-review-mail-20231129' into 'master'

Fix link in plain-text re-request MR review mails

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/138210



Merged-by: Lukas 'Eipi' Eipert <leipert@gitlab.com>
Approved-by: Lukas 'Eipi' Eipert <leipert@gitlab.com>
Co-authored-by: Manuel Grabowski <mgrabowski@gitlab.com>

app/views/notify/request_review_merge_request_email.text.erb

-<%= sanitize_name(@updated_by.name) %> requested a new review on <%= merge_request_reference_link(@merge_request) %>.
+<%= sanitize_name(@updated_by.name) %> requested a new review on <%= url_for(project_merge_request_url(@merge_request.target_project, @merge_request)) %>
 <%= render_if_exists 'notify/diff_summary' -%>