Coverage-Check Rule does not apply

Summary

Code Coverage Approval Rule is overwritten and not working

Steps to reproduce

1. Enable Coverage-Check Rule
2. Create a pipeline on main with code coverage
3. Create another branch off main
4. With another user
5. Edit the gitlab-ci.yml file of that branch to reduce the code coverage
6. MR can still be merged w/o approval

Example Project

mfanGitLab/simplecodecoverage!3

What is the current bug behavior?

MergeRequest is able to merge w/o approvals

What is the expected correct behavior?

Approvals are needed because code coverage quality decreased

Relevant logs and/or screenshots

Output of checks

Results of GitLab environment info

Expand for output related to GitLab environment info

   (For installations with omnibus-gitlab package run and paste the output of: \\\\\\\`sudo gitlab-rake gitlab:env:info\\\\\\\`)  (For installations from source run and paste the output of: \\\\\\\`sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production\\\\\\\`)    

Results of GitLab application Check

Expand for output related to the GitLab application check

  (For installations with omnibus-gitlab package run and paste the output of: \\\`sudo gitlab-rake gitlab:check SANITIZE=true\\\`)  (For installations from source run and paste the output of: \\\`sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production SANITIZE=true\\\`)  (we will only investigate if the tests are passing)   

Possible fixes