[Other]: Navigation scrollbar overlaps version dropdown in Firefox

[Monkeylordz]

📋 Explain your issue

This is just a minor styling issue, and of course it's just for Firefox.

The scrollbar in the left navigation panel overlaps the version dropdown:

Not sure if it's worth fixing, but adding a little extra margin-inline to the dropdown (mx-1 -> mx-3) resolves the issue without any major visible differences.