Option to be able to change oauth webserver port

What is your current rclone version (output from rclone version)?

1.72.1

What problem are you are trying to solve?

I try to authorize Rclone (create an authorization JSON/token) for a headless server on Windows. I run (or formerly ran) something on the auth webserver port (53682) which gives the error message:

Error: config failed to refresh token: failed to start auth webserver: listen tcp 127.0.0.1:53682: bind: An attempt was made to access a socket in a way forbidden by its access permissions.

Actually nothing runs on that port. Maybe WSL2 or Docker Desktop or many of my browser windows did something, but I cannot get this working.
(I tried to run authorize onedrive with alpine/rclone:1.72.1 docker container, but couldn't map port, because somehow that port is opened later, so docker runner cannot pick that up; the container is started, but port is not reachable).

Only way to get this work locally is to have a restart (or logout-login), without WSL2 and Docker Desktop. I know about the remote possibilities, but it's hard to find an SSH-able machine and have the port tunneling and everything well.

How do you think rclone should be changed to solve that?

If it's possible, it would be great to have a command line parameter which can set the port of the auth webserver.

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Start by tracing the auth webserver used when running the authorize command, focusing on how its current port 53682 is selected and how the webserver starts. Add a command-line option for selecting that port and verify that authorization works when the default port is unavailable, including the Docker use case described in the issue.