### 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)

if (p_target.has_container_element_type()) {
				if (!p_source.has_container_element_type()) {
					
					
					valid = false;
				} else {
					valid = is_type_compatible(p_target.get_container_element_type(), p_source.get_container_element_type(), p_allow_implicit_conversion);
				}
			}
		}
		return valid;
	}
	if (p_target.kind == GDScriptParser::DataType::ENUM) {
		if (p_source.kind == GDScriptParser::DataType::BUILTIN && p_source.builtin_type == Variant::INT) {
#ifdef DEBUG_ENABLED
			if (p_source_node) {
				parser->push_warning(p_source_node, GDScriptWarning::INT_ASSIGNED_TO_ENUM);
			}
#endif
			return true;
		}
		if (p_source.kind == GDScriptParser::DataType::ENUM) {
			if (p_source.native_type == p_target.native_type) {
				return true;
			}
		}
		return false;
	}