### Godot version

v4.1.rc1.official [1f9e540f1]

### System information

Windows 10

### Issue description

Attempting to reorder the children of a TabContainer results in an unintended ordering and incorrect undo states.

Also happens in v4.0.3.stable.official [5222a99f5].

https://github.com/godotengine/godot/assets/3820082/2c2458e3-88ad-46d9-8a04-f289a049984a



### Steps to reproduce

1. Add a new TabContainer
2. Add a few children to it
3. Drag and drop to erroneously reorder them
4. Attempt to undo the change

### Minimal reproduction project

N/A
String res = s;
	bool carry = res.length() > 0;
	for (int i = res.length() - 1; i >= 0; i--) {
		if (!carry) {
			break;
		}
		char32_t n = s[i];
		if (n == '9') { 
			res[i] = '0';
		} else {
			res[i] = s[i] + 1;
			carry = false;
		}
	}
	if (carry) {
		res = "1" + res;
	}
	return res;
}
void Node::_generate_serial_child_name(const Node *p_child, StringName &name) const {