Allow commands with xbox achievements enabled (#4894)

* Allow commands with xbox achievements enabled

* Don't enable by default

* Add null check to paramData

* Update comment

Author: rtm516

core/src/main/java/org/geysermc/geyser/translator/protocol/java/JavaCommandsTranslator.java

@@ -169,8 +169,8 @@ public void translate(GeyserSession session, ClientboundCommandsPacket packet) {
             return;
         }
 
-        // The command flags, not sure what these do apart from break things
-        Set<CommandData.Flag> flags = Set.of();
+        // The command flags, set to NOT_CHEAT so known commands can be used while achievements are enabled.
+        Set<CommandData.Flag> flags = Set.of(CommandData.Flag.NOT_CHEAT);
 
         // Loop through all the found commands
         for (Map.Entry<BedrockCommandInfo, Set<String>> entry : commands.entrySet()) {
@@ -449,7 +449,7 @@ public void buildChildren(CommandBuilderContext context, CommandNode[] allNodes)
                         type = (CommandParam) mappedType;
                         // Bedrock throws a fit if an optional message comes after a string or target
                         // Example vanilla commands: ban-ip, ban, and kick
-                        if (optional && type == CommandParam.MESSAGE && (paramData.getType() == CommandParam.STRING || paramData.getType() == CommandParam.TARGET)) {
+                        if (optional && type == CommandParam.MESSAGE && paramData != null && (paramData.getType() == CommandParam.STRING || paramData.getType() == CommandParam.TARGET)) {
                             optional = false;
                         }
                     }

core/src/main/resources/config.yml

@@ -168,7 +168,6 @@ above-bedrock-nether-building: false
 force-resource-packs: true
 
 # Allows Xbox achievements to be unlocked.
-# THIS DISABLES ALL COMMANDS FROM SUCCESSFULLY RUNNING FOR BEDROCK IN-GAME, as otherwise Bedrock thinks you are cheating.
 xbox-achievements-enabled: false
 
 # Whether player IP addresses will be logged by the server.