Fix java disconnect message

src/main/java/org/geysermc/globallinkserver/java/JavaPlayer.java

@@ -52,8 +52,8 @@ public void sendMessage(String message) {
 
     @Override
     public void disconnect(String reason) {
-        session.send(new ClientboundLoginDisconnectPacket(jsonFormatMessage(reason)));
-        session.disconnect(reason);
+        session.send(new ClientboundLoginDisconnectPacket(LEGACY_SERIALIZER.deserialize(reason)));
+        session.disconnect(LEGACY_SERIALIZER.deserialize(reason));
     }
 
     @Override

src/main/java/org/geysermc/globallinkserver/player/Player.java

@@ -48,8 +48,4 @@ default void sendJoinMessages() {
     default String formatMessage(String message) {
         return message.replace("&", "§");
     }
-
-    default String jsonFormatMessage(String message) {
-        return "{\"text\": \"" + formatMessage(message) + "\"}";
-    }
 }

src/main/java/org/geysermc/globallinkserver/player/PlayerManager.java

@@ -60,6 +60,8 @@ public JavaPlayer addJavaPlayer(Session session, GameProfile gameProfile) {
             old.disconnect("You logged in from somewhere else");
         }
 
+        player.disconnect("&aYou are now successfully linked! :)");
+
         return player;
     }