Disable rather than hiding edit button when a file cannot be edited

Problem to solve

Going to a repo where you don't have push access and merge requests are disabled, and then to a specific file in it, you can't edit and then propose a Merge Request directly. This is confusing.

Further details

The OP thought merge requests weren't supported, but they had just been disabled:

You have to go to the repo's main page, fork it, go to your fork, create a branch, edit and commit the file, go to the original repo and then create the Merge Request.

Proposal

Rather than hiding the Edit button, disable it and show a tooltip

Links / references