feat: update nakama, and patch, checkpoint for restore 2.3.1

scripts/nakama_manager.gd

@@ -184,10 +184,8 @@ func host_game(room_meta: Dictionary = {}):
 		printerr("Cannot host: Bridge not initialized")
 		return
 	print("Hosting match via Nakama Bridge...")
-	var result = await bridge.create_match()
-	if result and result.is_exception():
-		emit_signal("match_join_error", result.get_exception().message)
-		return
+	await bridge.create_match()
+	# Errors are emitted via bridge's match_join_error signal
 	# Store room metadata in Nakama storage so other players can see it in listings
 	if session and current_match_id and room_meta.size() > 0:
 		var meta_json = JSON.stringify(room_meta)
@@ -213,10 +211,13 @@ func join_game(match_id: String):
 		# Wait a bit for cleanup
 		await get_tree().create_timer(0.2).timeout
 		
+	if not bridge:
+		printerr("Cannot join: Bridge became null while waiting")
+		return
+
 	print("Joining match: ", match_id)
-	var result = await bridge.join_match(match_id)
-	if result and result.is_exception():
-		emit_signal("match_join_error", result.get_exception().message)
+	await bridge.join_match(match_id)
+	# Errors are emitted via bridge's match_join_error signal
 
 # --- Callbacks ---