MacOS: After "failed to connect to instance", cannot login without restarting client

Please consider fixing the issue that requires a full client restart after encountering "failed to connect to instance" as a QoL improvement for people trying to determine whether or not "failed to connect to instance" is recoverable after trying lots and lots of times.

Currently, we have to restart the client after each attempt as subsequent attempts to login result in "Unable to connect to login server"

This should be a pretty simple change to the client to reset the variables related to "logged-in-ness"; it shouldn't require a server change.

Obviously, it would be better if the MacOS PoE client was able to connect to the PoE servers, but I understand that fixing other bugs on Windows are a priority for the team.