Deploy approvals for deployment does not work for groups

Summary

Trying to select a group for "allowed to deploy" is not possible. The backend returns a "Deploy access levels is too short (minimum is 1 character)" error message.

Steps to reproduce

Képernyőfelvétel_2023-10-05_-_19.52.06

Example Project

https://gitlab.com/gitlab-org/ci-cd/deploy-stage/demos/podtato-head-delivery/-/settings/ci_cd

What is the current bug behavior?

Error in the console

What is the expected correct behavior?

The environment is protected

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