### Godot version

v4.2.dev3.official [013e8e3af]

### System information

Windows 11, Core i5-12400F, RX 6600

### Issue description

TileSet->Setup->Separation maybe should have "px" like rest?
![Screenshot 2023-08-21 162202](https://github.com/godotengine/godot/assets/962340/3c6b9a97-7520-4610-8153-7882cc9c303f)
I know this is pixels from testing it.

TileSet->Select is this Animation Separation "px" too? idk
![Screenshot 2023-08-21 162131](https://github.com/godotengine/godot/assets/962340/fcb580e3-9ff7-41d8-92d3-e585841d3803)
I tried setting up animation separation and got a not enough room error, so maybe not "px". idk


Thanks.


### Steps to reproduce

- open TileSet->Setup->Separation, note some have "px" and one doesn't
- open TileSet->Select, is this separation "px" too?


### Minimal reproduction project

n/a
return occurence_id == p_other.occurence_id ? property < p_other.property : occurence_id < p_other.occurence_id;
		}
	};
	struct PLData {
		int uses = 0;
		PropertyInfo property_info;
	};
	RBMap<PropertyId, PLData> usage;
	List<PLData *> data_list;
	for (const TileSelection &E : tiles) {
		const Vector2i &coords = E.tile;
		const int &alternative = E.alternative;
		TileData *tile_data = tile_set_atlas_source->get_tile_data(coords, alternative);
		ERR_FAIL_COND(!tile_data);
		List<PropertyInfo> list;
		tile_data->get_property_list(&list);
		HashMap<String, int> counts; 
		for (List<PropertyInfo>::Element *E_property = list.front(); E_property; E_property = E_property->next()) {
			
			if (E_property->get().usage & PROPERTY_USAGE_CATEGORY) {