### 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)

#ifndef GDSCRIPT_PARSER_H
#define GDSCRIPT_PARSER_H
#include "gdscript_cache.h"
#include "gdscript_tokenizer.h"
#ifdef DEBUG_ENABLED
#include "gdscript_warning.h"
#endif
#include "core/io/resource.h"
#include "core/object/ref_counted.h"
#include "core/object/script_language.h"
#include "core/string/string_name.h"
#include "core/string/ustring.h"
#include "core/templates/hash_map.h"
#include "core/templates/list.h"
#include "core/templates/rb_map.h"
#include "core/templates/vector.h"
#include "core/variant/variant.h"
#ifdef DEBUG_ENABLED
#include "core/string/string_builder.h"
#endif
class GDScriptParser {
	struct AnnotationInfo;