### 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)

COMPLETION_OVERRIDE_METHOD, 
		COMPLETION_PROPERTY_DECLARATION, 
		COMPLETION_PROPERTY_DECLARATION_OR_TYPE, 
		COMPLETION_PROPERTY_METHOD, 
		COMPLETION_RESOURCE_PATH, 
		COMPLETION_SUBSCRIPT, 
		COMPLETION_SUPER_METHOD, 
		COMPLETION_TYPE_ATTRIBUTE, 
		COMPLETION_TYPE_NAME, 
		COMPLETION_TYPE_NAME_OR_VOID, 
	};
	struct CompletionContext {
		CompletionType type = COMPLETION_NONE;
		ClassNode *current_class = nullptr;
		FunctionNode *current_function = nullptr;
		SuiteNode *current_suite = nullptr;
		int current_line = -1;
		int current_argument = -1;
		Variant::Type builtin_type = Variant::VARIANT_MAX;
		Node *node = nullptr;
		Object *base = nullptr;
		List<Ref<GDScriptParserRef>> dependent_parsers;
	};
	struct CompletionCall {
		Node *call = nullptr;
		int argument = -1;
	};
private:
	friend class GDScriptAnalyzer;
	bool _is_tool = false;