### 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)

is_member = true;
						is_static = false;
						GDScript::MemberInfo &minfo = codegen.script->member_indices[var_name];
						setter_function = minfo.setter;
						has_setter = setter_function != StringName();
						is_in_setter = has_setter && setter_function == codegen.function_name;
						member.mode = GDScriptCodeGenerator::Address::MEMBER;
						member.address = minfo.index;
						member.type = minfo.data_type;
					} else {
						
						GDScript *scr = codegen.script;
						while (scr) {
							if (scr->static_variables_indices.has(var_name)) {
								is_member = true;
								is_static = true;
								GDScript::MemberInfo &minfo = scr->static_variables_indices[var_name];
								setter_function = minfo.setter;
								has_setter = setter_function != StringName();
								is_in_setter = has_setter && setter_function == codegen.function_name;
								static_var_class = codegen.add_constant(scr);
								static_var_index = minfo.index;
								static_var_data_type = minfo.data_type;
								break;
							}
							scr = scr->_base;
						}
					}
				}
				GDScriptCodeGenerator::Address target;