get Configured Simulator Host
Returns the persisted WebSocket simulator host, normalized the same way setConfiguredSimulator normalizes its argument.
Use this to decide whether a reconfiguration is actually needed. isSimulatorConfigured only reports that a simulator is configured, not which one — so a caller that wants to point the SDK at a host had no way to tell "already on the right host" from "needs changing", and reconfiguring unconditionally tears down the connect the SDK starts at init, racing a second socket against it.
Return
String — the configured host, or an empty string when the simulator transport is not configured.