### 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 (locals_indices.has(p_name)) {
		return true;
	}
	if (parent_block != nullptr) {
		return parent_block->has_local(p_name);
	}
	return false;
}
const GDScriptParser::SuiteNode::Local &GDScriptParser::SuiteNode::get_local(const StringName &p_name) const {
	if (locals_indices.has(p_name)) {
		return locals[locals_indices[p_name]];
	}
	if (parent_block != nullptr) {
		return parent_block->get_local(p_name);
	}
	return empty;
}
bool GDScriptParser::AnnotationNode::apply(GDScriptParser *p_this, Node *p_target) {
	if (is_applied) {
		return true;
	}
	is_applied = true;
	return (p_this->*(p_this->valid_annotations[name].apply))(this, p_target);
}
bool GDScriptParser::AnnotationNode::applies_to(uint32_t p_target_kinds) const {
	return (info->target_kind & p_target_kinds) > 0;
}
bool GDScriptParser::validate_annotation_arguments(AnnotationNode *p_annotation) {