### 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)

if (expr.mode == GDScriptCodeGenerator::Address::TEMPORARY) {
						codegen.generator->pop_temporary();
					}
				} else {
					ERR_FAIL_V_MSG(ERR_INVALID_DATA, "Bug in bytecode compiler, unexpected node in parse tree while parsing statement."); 
				}
			} break;
		}
		gen->clean_temporaries();
	}
	if (p_add_locals && p_reset_locals) {
		_clear_addresses(codegen, block_locals);
	}
	codegen.end_block();
	return OK;
}
GDScriptFunction *GDScriptCompiler::_parse_function(Error &r_error, GDScript *p_script, const GDScriptParser::ClassNode *p_class, const GDScriptParser::FunctionNode *p_func, bool p_for_ready, bool p_for_lambda) {
	r_error = OK;
	CodeGen codegen;
	codegen.generator = memnew(GDScriptByteCodeGenerator);
	codegen.class_node = p_class;
	codegen.script = p_script;
	codegen.function_node = p_func;
	StringName func_name;
	bool is_static = false;
	Variant rpc_config;
	GDScriptDataType return_type;
	return_type.has_type = true;
	return_type.kind = GDScriptDataType::BUILTIN;
	return_type.builtin_type = Variant::NIL;