### 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 (!can_continue) {
		push_error(R"(Cannot use "continue" outside of a loop.)");
	}
	current_suite->has_continue = true;
	ContinueNode *cont = alloc_node<ContinueNode>();
	complete_extents(cont);
	end_statement(R"("continue")");
	return cont;
}
GDScriptParser::ForNode *GDScriptParser::parse_for() {
	ForNode *n_for = alloc_node<ForNode>();
	if (consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected loop variable name after "for".)")) {
		n_for->variable = parse_identifier();
	}
	consume(GDScriptTokenizer::Token::IN, R"(Expected "in" after "for" variable name.)");
	n_for->list = parse_expression(false);
	if (!n_for->list) {
		push_error(R"(Expected a list or range after "in".)");
	}
	consume(GDScriptTokenizer::Token::COLON, R"(Expected ":" after "for" condition.)");
	
	bool could_break = can_break;
	bool could_continue = can_continue;
	
	can_break = true;