Allow to disable the "xxx commits behind master" information in forked repositories
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### Summary
Recently, gitlab shows a
```
Forked from mirror / ...
1085 commits behind the upstream repository.
```
like information for forked repositories and sometimes there is an "update-fork" button.
This is confusing and can be dangerous:
- we nearly almost use versioned branches as base for the fork (e.g. linux kernel version v6.1) while base repository has `master` as default branch. The information, how many commits we are behind or ahead the upstream repository is not meaningful in this case and confuses only
- we definitively do not want the "update-fork" functionality in the situation above. But "update-fork" works even on protected branches and does not ask for confirmation either. This is dangerous because it changes the code silently.
Please add an option to disable this box.
### Screenshots

---> "Update fork" button exists plus completely meaningless information about ahead/behind

---> but same branch is protected and user is not allowed to push into it
issue