### Godot version

4.1.0

### System information

Windows 10, i711800H, Forward+ Vulkan

### Issue description

When using @export_group("Name") in a BaseClass, then inheriting from that BaseClass in another class and there also using @export_group("Name"), with the same group name, then running the project and re-saving the inherited class the project crashes with 
```
ERROR: FATAL: Index p_index = 3 is out of bounds (size() = 3).
   at: get (./core/templates/cowdata.h:155)
```

sometimes the editor crashes too after a while.

### Steps to reproduce

1. open reproduction project
2. Run the project.
3. Open the "super"script
4. Press CTRL + S to save it.

### Minimal reproduction project

[MRP_.zip](https://github.com/godotengine/godot/files/12137412/MRP_.zip)

GDScriptParser::DataType member_t = p_node->datatype;
	GDScriptParser::DataType init_t = p_node->initializer->datatype;
	if (member_t.is_hard_type() && init_t.is_hard_type() &&
			member_t.kind == GDScriptParser::DataType::BUILTIN && init_t.kind == GDScriptParser::DataType::BUILTIN) {
		if (Variant::can_convert_strict(init_t.builtin_type, member_t.builtin_type)) {
			Variant *v = &p_node->initializer->reduced_value;
			Callable::CallError ce;
			Variant::construct(member_t.builtin_type, p_variant, const_cast<const Variant **>(&v), 1, ce);
		}
	}
}
void GDScriptCompiler::make_scripts(GDScript *p_script, const GDScriptParser::ClassNode *p_class, bool p_keep_state) {