Merge details no longer shows "# commits behind"

Summary

It is currently possible to merge into target branch without the knowledge, that it is behind and/or ahead of the target.

Steps to reproduce

• Create a MR
• Add changes or files
• Let a Pipeline Run or Fail

What is the current bug behavior?

MR is marked ready without the merge button, but is showing the commits behind information.

MR is marked ready with the merge button, but the MR is 100+ commits behind without showing it.

What is the expected correct behavior?

• The ready status should only be shown if the merge button is shown
• Behind and Ahead target branch should always be shown if it is not 0.

Details of package version

Gitlab Omnibus 15.1.2

Proposal

Add Commits behind... info to widget:

[x] Delete source branch   [ ] Edit commit message

The source branch is 59 commits behind the target branch • 2 commits and 1 merge commit will be added to master

[Merge]