### Godot version

4.0 beta 10

### System information

Windows 10

### Issue description

Godot crashes when i accidently name 2 items in an enum the same

EDIT:
The editor freeze for some seconds, then both editor- and console-window dissapear

### Steps to reproduce

Write

```gdscript
enum {
    A,
}
```

and then add a second line with another A:

```gdscript
enum {
    A,
    A # <- crash
}
```

Does not always immediatly happen if i copy&paste items.
Does not happen when i change the script in another editor and open the script in Godot.

### Minimal reproduction project

[enum.zip](https://github.com/godotengine/godot/files/10313759/enum.zip)

}
void GDScriptAnalyzer::resolve_function_signature(GDScriptParser::FunctionNode *p_function, const GDScriptParser::Node *p_source, bool p_is_lambda) {
	if (p_source == nullptr) {
		p_source = p_function;
	}
	StringName function_name = p_function->identifier != nullptr ? p_function->identifier->name : StringName();
	if (p_function->get_datatype().is_resolving()) {
		push_error(vformat(R"(Could not resolve function "%s": Cyclic reference.)", function_name), p_source);
		return;
	}
	if (p_function->resolved_signature) {
		return;
	}
	p_function->resolved_signature = true;
	GDScriptParser::FunctionNode *previous_function = parser->current_function;
	parser->current_function = p_function;
	GDScriptParser::DataType prev_datatype = p_function->get_datatype();
	GDScriptParser::DataType resolving_datatype;
	resolving_datatype.kind = GDScriptParser::DataType::RESOLVING;