### 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)

StringName class_name;
									if (base.type.kind == GDScriptDataType::NATIVE) {
										class_name = base.type.native_type;
									} else {
										class_name = base.type.native_type == StringName() ? base.type.script_type->get_instance_base_type() : base.type.native_type;
									}
									if (ClassDB::class_exists(class_name) && ClassDB::has_method(class_name, call->function_name)) {
										MethodBind *method = ClassDB::get_method(class_name, call->function_name);
										if (_can_use_ptrcall(method, arguments)) {
											
											gen->write_call_ptrcall(result, base, method, arguments);
										} else {
											
											gen->write_call_method_bind(result, base, method, arguments);
										}
									} else {
										gen->write_call(result, base, call->function_name, arguments);
									}
								} else if (base.type.has_type && base.type.kind == GDScriptDataType::BUILTIN) {
									gen->write_call_builtin_type(result, base, base.type.builtin_type, call->function_name, arguments);
								} else {
									gen->write_call(result, base, call->function_name, arguments);
								}
								if (base.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
									gen->pop_temporary();
								}
							}
						} else {
							_set_error("Cannot call something that isn't a function.", call->callee);