fix: use _find_skeleton and _find_animation_player consistently

characters/skinned_player_model.gd

@@ -123,7 +123,7 @@ func _find_skeleton(node: Node) -> Skeleton3D:
 	if node is Skeleton3D:
 		return node
 	for child in node.get_children():
-		var result = find_skeleton(child)
+		var result = _find_skeleton(child)
 		if result:
 			return result
 	return null
@@ -132,7 +132,7 @@ func _find_animation_player(node: Node) -> AnimationPlayer:
 	if node is AnimationPlayer:
 		return node
 	for child in node.get_children():
-		var result = find_animation_player_recursive(child)
+		var result = _find_animation_player(child)
 		if result:
 			return result
 	return null