### Godot version

4.0 RC 3

### System information

Macbook m1

### Issue description

If I normally use:
```
Skeleton2D.new()
```

if works.

If I use:
```
@export_group("Skeleton2D")
...
Skeleton2D.new()
```

I get error: `Invalid call. Nonexistent function 'new' in base 'Nil'.`

### Steps to reproduce

- Run a script where you have `@export_group` with same name as a node class name that you use `.new()` on.

```
extends Node2D
class_name Test

@export_group("Skeleton2D")

# Called when the node enters the scene tree for the first time.
func _ready():
	var skeleton = Skeleton2D.new()


# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(delta):
	pass
```

### Minimal reproduction project

[BugNew.zip](https://github.com/godotengine/godot/files/10818936/BugNew.zip)

push_warning(p_source, p_code, Vector<String>{ p_symbols... });
	}
#endif
	void make_completion_context(CompletionType p_type, Node *p_node, int p_argument = -1, bool p_force = false);
	void make_completion_context(CompletionType p_type, Variant::Type p_builtin_type, bool p_force = false);
	void push_completion_call(Node *p_call);
	void pop_completion_call();
	void set_last_completion_call_arg(int p_argument);
	GDScriptTokenizer::Token advance();
	bool match(GDScriptTokenizer::Token::Type p_token_type);
	bool check(GDScriptTokenizer::Token::Type p_token_type) const;
	bool consume(GDScriptTokenizer::Token::Type p_token_type, const String &p_error_message);
	bool is_at_end() const;
	bool is_statement_end_token() const;
	bool is_statement_end() const;
	void end_statement(const String &p_context);
	void synchronize();
	void push_multiline(bool p_state);
	void pop_multiline();
	
	void parse_program();
	ClassNode *parse_class(bool p_is_static);
	void parse_class_name();
	void parse_extends();
	void parse_class_body(bool p_is_multiline);
	template <class T>
	void parse_class_member(T *(GDScriptParser::*p_parse_function)(bool), AnnotationInfo::TargetKind p_target, const String &p_member_kind, bool p_is_static = false);
	SignalNode *parse_signal(bool p_is_static);
	EnumNode *parse_enum(bool p_is_static);