URLs starting with a slash (e.g. kdbx:///path/to/db.kdbx) displayed as invalid

[heylix]

Overview

If you enter an absolute path to a file on Linux, e.g. `kdbx:///path/to/db.kdbx) for AutoOpen, the entry field tells you "Invalid URL".

Steps to Reproduce

1. add any absolute URL with three slashes
2. clicking on the URL still works as expected.

Expected Behavior

The field shouldn't become red.

Actual Behavior

URL field becomes red and tells you "invalid URL"

Context

KeePassXC - Version 2.6.6
Revision: 9c108b9

Operating System: Linux
Desktop Env: KDE
Windowing System: X11/Wayland