### Godot version

4.0-rc1

### System information

Windows 10

### Issue description

The code: `@export @onready var camera_system : Node3D`

Is throwing: `Line 5:The "@onready" annotation will make the default value to be set after the "@export" takes effect and will override it. (Warning treated as error.)` and is crashing the game.

Unchecking "Treat Warning as Errors" seems to have no effect:

![imagen](https://user-images.githubusercontent.com/248383/217900756-8e214c40-68fb-4fb2-8509-a1e689725930.png)

![imagen](https://user-images.githubusercontent.com/248383/217901253-3b758ebc-48e9-40fe-8d77-16fce7cbae88.png)


### Steps to reproduce

- Write `@export @onready var some_var : Node3D`
- In Project Settings, uncheck `Treat Warning as Errors`
- Try to run the project, a `Parser Error` will be thrown.

### Minimal reproduction project

It's as simple as adding one line of code, so I'm not sure a MRP is needed.
}
		}
		if (!match(GDScriptTokenizer::Token::IDENTIFIER)) {
			break;
		}
		function = parse_identifier();
	}
	complete_extents(p_variable);
	if (p_variable->property == VariableNode::PROP_SETGET) {
		end_statement("property declaration");
	}
	if (p_need_indent) {
		consume(GDScriptTokenizer::Token::DEDENT, R"(Expected end of indented block for property.)");
	}
	return property;
}
void GDScriptParser::parse_property_setter(VariableNode *p_variable) {
	switch (p_variable->property) {
		case VariableNode::PROP_INLINE: {
			FunctionNode *function = alloc_node<FunctionNode>();
			IdentifierNode *identifier = alloc_node<IdentifierNode>();
			complete_extents(identifier);
			identifier->name = "@" + p_variable->identifier->name + "_setter";
			function->identifier = identifier;
			consume(GDScriptTokenizer::Token::PARENTHESIS_OPEN, R"(Expected "(" after "set".)");
			ParameterNode *parameter = alloc_node<ParameterNode>();
			if (consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected parameter name after "(".)")) {
				reset_extents(parameter, previous);
				p_variable->setter_parameter = parse_identifier();
				parameter->identifier = p_variable->setter_parameter;