Merge branch 'fix-feature-rollout-distribution' into 'master'

Fix experiment rollout logic

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/133038



Merged-by: Stan Hu <stanhu@gmail.com>
Approved-by: Serhii Yarynovskyi <syarynovskyi@gitlab.com>
Approved-by: Stan Hu <stanhu@gmail.com>
Co-authored-by: Doug Stull <dstull@gitlab.com>