Dont disconnect when connecting to steam servers on non steam (#5617)

This will allow sending steam players to steam servers while completely ignoring non steam ones.

core/src/mindustry/core/NetClient.java

@@ -290,6 +290,7 @@ public class NetClient implements ApplicationListener{
 
     @Remote(called = Loc.client, variants = Variant.one)
     public static void connect(String ip, int port){
+        if(!steam && ip.startsWith("steam:")) return;
         netClient.disconnectQuietly();
         logic.reset();