Mostly trying to give more space to the queue as we add more vertical
elements to the middle area of multiplayer / playerlists. This whole UI
will likely change – this is just a stop-gap fix.
In particular, when the exception is:
`AggregateException { AggregateException { HubException } }`,
then the existing code will only unwrap the first aggregate exception.
The overlay's code was copied from the extension so both have been
adjusted here.