Inconsistent SSO login message

[amisskii]

I'm encountering a contradictory message when trying to log in through the SSO extension on Linux. The message reads:

"Signing into a Red Hat account requires a running Podman machine and is currently not supported on a Linux host. Please start a Podman machine and try again."

However, despite this message, the login process seems to succeed, and the status shows as "logged in" with a successful connection to the Red Hat container registry.

This behavior seems confusing as it initially suggests that logging in on Linux isn't supported, but it actually works in practice.

Steps to Reproduce:

Download the SSO extension
Attempt to log in to a Red Hat account via the SSO extension on a Linux host.
Observe the message mentioned above.
Verify the login status and connection to the Red Hat container registry.

Env:
PD version: 1.13-next
Podman version: 5.2.3