Undertow read/write timeout should not apply to WebSockets or SSE

https://issues.redhat.com/browse/WFLY-14980 changed Undertow's default read/write timeouts to 90 seconds. This causes WebSockets to get disconnected after 90 seconds if both sides are not sending messages. It probably also breaks server-sent event streams since the client can't send anything after the initial request, though I have not tested that.

WebSockets and SSE streams should therefore be exempted from read/write timeouts, or at least have independent timeout settings.

Workaround: set read-timeout and write-timeout to 0 on the http(s)-listener in the Undertow subsystem. This restores the old behavior.