### Godot version

4.0.2.stable

### System information

Fedora 37, GeForce RTX 4090 (NVIDIA 530.41.03)

### Issue description

Physical Keycode and Key Label options appear grayed out in the input editor when editing an existing key, even though I should logically be able to change it:

![image](https://github.com/godotengine/godot/assets/180032/54d4c3a5-4da5-4448-b42a-42f0c6870cc2)

If I set the key to another key then change it back, then the **Physical Keycode** and **Key Label** options are no longer grayed out.

cc @bruvzg

### Steps to reproduce

- Open the Project Settings > Input Map tab.
- Create an action, with an associated key. Save it.
- Click the edit button next to the key, and try to change the type without touching the actual key's value.
- Change the key's value back and forth and try to change the type using the dropdown again.

### Minimal reproduction project

N/A
Ref<InputEventWithModifiers> ie = event;
	if (ie.is_valid()) {
		ie->set_command_or_control_autoremap(p_checked);
		_set_event(ie, original_event);
	}
	if (p_checked) {
		mod_checkboxes[MOD_META]->hide();
		mod_checkboxes[MOD_CTRL]->hide();
	} else {
		mod_checkboxes[MOD_META]->show();
		mod_checkboxes[MOD_CTRL]->show();
	}
}
void InputEventConfigurationDialog::_key_mode_selected(int p_mode) {