fix: afk state isn't revoked after disconnection

src/main/java/io/ib67/sfcraft/module/AFKModule.java

@@ -25,6 +25,16 @@ public class AFKModule extends ServerModule {
     public void onInitialize() {
         SFCallbacks.PLAYER_IDLE.register(this::onAFK);
         ServerPlayConnectionEvents.JOIN.register(this::onJoin);
+        ServerPlayConnectionEvents.DISCONNECT.register(this::onDisconnect);
+    }
+
+    private void onDisconnect(ServerPlayNetworkHandler serverPlayNetworkHandler, MinecraftServer server) {
+        if (team != null) {
+            var name = serverPlayNetworkHandler.getPlayer().getName().getLiteralString();
+            team.getPlayerList().remove(name);
+            server.getPlayerManager().sendToAll(TeamS2CPacket.updateTeam(team, true));
+            server.getPlayerManager().sendToAll(TeamS2CPacket.changePlayerTeam(team, name, TeamS2CPacket.Operation.REMOVE));
+        }
     }
 
     @Override
@@ -36,16 +46,25 @@ public class AFKModule extends ServerModule {
     }
 
     private void onAFK(ServerPlayerEntity player, boolean afk) {
-        String playerName = player.getName().getLiteralString();
-        Objects.requireNonNull(playerName);
         if (afk) {
+            enAFK(player);
+        } else {
+            deAFK(player);
+        }
+    }
+
+    private void enAFK(ServerPlayerEntity player) {
+        String playerName = player.getName().getLiteralString();
         team.getPlayerList().add(playerName);
         player.server.getPlayerManager().sendToAll(TeamS2CPacket.updateTeam(team, true));
         player.server.getPlayerManager().broadcast(
                 Text.literal(" * " + playerName + " 正在挂机.").withColor(Colors.LIGHT_GRAY),
                 false
         );
-        } else {
+    }
+
+    public void deAFK(ServerPlayerEntity player) {
+        String playerName = player.getName().getLiteralString();
         team.getPlayerList().remove(playerName);
         player.server.getPlayerManager().sendToAll(TeamS2CPacket.updateTeam(team, true));
         player.server.getPlayerManager().sendToAll(TeamS2CPacket.changePlayerTeam(team, playerName, TeamS2CPacket.Operation.REMOVE));
@@ -54,7 +73,6 @@ public class AFKModule extends ServerModule {
                 false
         );
     }
-    }
 
     private void onJoin(ServerPlayNetworkHandler serverPlayNetworkHandler, PacketSender packetSender, MinecraftServer minecraftServer) {
         if (team != null) {