### 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)

} else {
				gen->write_construct_array(result, values);
			}
			for (int i = 0; i < values.size(); i++) {
				if (values[i].mode == GDScriptCodeGenerator::Address::TEMPORARY) {
					gen->pop_temporary();
				}
			}
			return result;
		} break;
		case GDScriptParser::Node::DICTIONARY: {
			const GDScriptParser::DictionaryNode *dn = static_cast<const GDScriptParser::DictionaryNode *>(p_expression);
			Vector<GDScriptCodeGenerator::Address> elements;
			
			GDScriptDataType dict_type;
			dict_type.has_type = true;
			dict_type.kind = GDScriptDataType::BUILTIN;
			dict_type.builtin_type = Variant::DICTIONARY;
			GDScriptCodeGenerator::Address result = codegen.add_temporary(dict_type);
			for (int i = 0; i < dn->elements.size(); i++) {
				
				GDScriptCodeGenerator::Address element;
				switch (dn->style) {
					case GDScriptParser::DictionaryNode::PYTHON_DICT:
						
						element = _parse_expression(codegen, r_error, dn->elements[i].key);
						if (r_error) {
							return GDScriptCodeGenerator::Address();
						}
						break;