GitLab commit tree URL parsing issue

Bug description

If you want to check the file structure of a commit, you are probably opening it with Gitpod in 2 different ways:

1. From the commit page (GitHub example, GitLab example)
2. From the file tree of the commit (GitHub example, GitLab example)

It looks like as opposed to the first option, if you try to open the second example with GitLab, you get an error, because Gitpod incorrectly parses the GitLab commit tree URL. This doesn't happen with GitHub nor opening from a GitLab commit page.

Steps to reproduce

Buckle up, a very involving reproduction incoming!

1. Open a commit-specific file tree URL in Gitpod
2. Observe the error

Expected behavior

I expect the URL to work because

1. It is a pretty normal URL to open a workspace from
2. There is Gitpod button present so it looks like it is open-able.

Example repository

No response

Anything else?

Thanks @krystofex for letting me know about the issue 🧡 .

Start by reproducing the linked GitLab commit-specific tree URL in Gitpod, then trace the GitLab URL-parsing entry point that handles commit pages and file trees. Confirm that the tree URL is parsed as the intended commit and that opening the linked URL no longer produces the reported error.