Remove extra color codes at the start from converted json chat

By: Thinkofdeath <thinkofdeath@spigotmc.org>

paper-server/src/main/java/org/bukkit/craftbukkit/util/CraftChatMessage.java

@@ -154,7 +154,7 @@ public final class CraftChatMessage {
             }
             out.append(c.getText());
         }
-        return out.toString();
+        return out.toString().replaceFirst("^(§0)*", "");
     }
 
     private CraftChatMessage() {