### 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)

p_script->constants.insert(name, enum_value.value);
			} break;
			case GDScriptParser::ClassNode::Member::SIGNAL: {
				const GDScriptParser::SignalNode *signal = member.signal;
				StringName name = signal->identifier->name;
				Vector<StringName> parameters_names;
				parameters_names.resize(signal->parameters.size());
				for (int j = 0; j < signal->parameters.size(); j++) {
					parameters_names.write[j] = signal->parameters[j]->identifier->name;
				}
				p_script->_signals[name] = parameters_names;
			} break;
			case GDScriptParser::ClassNode::Member::ENUM: {
				const GDScriptParser::EnumNode *enum_n = member.m_enum;
				StringName name = enum_n->identifier->name;
				p_script->constants.insert(name, enum_n->dictionary);
			} break;
			case GDScriptParser::ClassNode::Member::GROUP: {
				const GDScriptParser::AnnotationNode *annotation = member.annotation;
				StringName name = annotation->export_info.name;
				
				GDScript::MemberInfo minfo;
				minfo.index = p_script->member_indices.size();
				PropertyInfo prop_info;
				prop_info.name = name;
				prop_info.usage = annotation->export_info.usage;
				prop_info.hint_string = annotation->export_info.hint_string;
				p_script->member_info[name] = prop_info;
				p_script->member_indices[name] = minfo;
				p_script->members.insert(name);