xpra 5.0-r32148-1 cannot connect via ssh

[allo-]

Describe the bug
xpra 5.0-r32148-1 cannot connect via ssh anymore.
Downgrading to version 5.0-r32078-1 fixes the issue for me, so the change must be a regeression between these two version.

xpra probably confuses the local and the remote username.

To Reproduce
Steps to reproduce the behavior:

1. server command

   remoteuser@remotehost$ xpra start :10

2. client command

   localuser@localhost$ xpra attach --ssh=/usr/bin/ssh ssh:remoteuser@server:10

3. specific action to trigger the bug

Trying to connect with the client

System Information (please complete the following information):

• Server OS: Debian stable
• Client OS: Debian testing
• Xpra Server Version 4.4-r0-1
• Xpra Client Version 5.0-r32148-1

Additional context

2022-10-21 16:02:21,892 Error: SSH connection to the xpra server failed
2022-10-21 16:02:21,892  check your username, hostname, display number, firewall, etc
2022-10-21 16:02:21,892  for server: ssh://remoteuser@server:10
2022-10-21 16:02:21,893  the command line used was:
2022-10-21 16:02:21,893  /usr/bin/ssh -l localuser -p 10 -T server

The command line should contain -l remoteuser as parameter or remoteuser@server as connection string.

[totaam]

Very likely 18720c1 or 998b9c5.
As a temporary workaround, you can use --ssh=ssh -l remoteuser.

[totaam]

Fixed in 3e05f9a

FYI: the syntax ssh:remoteuser@server:10 is deprecated and may be removed in the future.
Please switch to a more standard URL syntax (#3599): ssh://user@host:port/

[allo-]

That's, that was a fast fix. I'll update when there are new debian packages. If the error persists, I'll reopen, otherwise you can assume it works for me again.