Fix chat messages sent in vanish

Author: aromaa

src/mixins/java/org/spongepowered/common/mixin/core/server/players/PlayerListMixin.java

@@ -42,6 +42,7 @@
 import net.minecraft.network.Connection;
 import net.minecraft.network.chat.ChatType;
 import net.minecraft.network.chat.MutableComponent;
+import net.minecraft.network.chat.OutgoingChatMessage;
 import net.minecraft.network.chat.PlayerChatMessage;
 import net.minecraft.network.protocol.Packet;
 import net.minecraft.network.protocol.common.ClientboundDisconnectPacket;
@@ -654,6 +655,18 @@ public abstract class PlayerListMixin implements PlayerListBridge {
         }
     }
 
+    @ModifyExpressionValue(method = "broadcastChatMessage(Lnet/minecraft/network/chat/PlayerChatMessage;Ljava/util/function/Predicate;Lnet/minecraft/server/level/ServerPlayer;Lnet/minecraft/network/chat/ChatType$Bound;)V",
+        at = @At(value = "INVOKE", target = "Lnet/minecraft/network/chat/OutgoingChatMessage;create(Lnet/minecraft/network/chat/PlayerChatMessage;)Lnet/minecraft/network/chat/OutgoingChatMessage;"))
+    private OutgoingChatMessage impl$useDisguisedChatPacketForInvisibleSenders(
+        final OutgoingChatMessage original, final @Local(argsOnly = true) PlayerChatMessage message,
+        final @Local(argsOnly = true) net.minecraft.server.level.@Nullable ServerPlayer player
+    ) {
+        if (player != null && ((VanishableBridge) player).bridge$vanishState().invisible()) {
+            return new OutgoingChatMessage.Disguised(message.decoratedContent());
+        }
+        return original;
+    }
+
     @ModifyExpressionValue(method = "broadcastChatMessage(Lnet/minecraft/network/chat/PlayerChatMessage;Ljava/util/function/Predicate;Lnet/minecraft/server/level/ServerPlayer;Lnet/minecraft/network/chat/ChatType$Bound;)V",
         at = @At(value = "INVOKE", target = "Ljava/util/List;iterator()Ljava/util/Iterator;"))
     private Iterator<net.minecraft.server.level.ServerPlayer> impl$filterPlayersToBroadcastChatMessage(