### 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
if (!tile_set_atlas_source.is_valid()) {
		return;
	}
	
	if (tiles.size() == 1) {
		if (tiles.front()->get().alternative == 0) {
			p_list->push_back(PropertyInfo(Variant::NIL, TTR("Base Tile"), PROPERTY_HINT_NONE, String(), PROPERTY_USAGE_CATEGORY));
			p_list->push_back(PropertyInfo(Variant::VECTOR2I, PNAME("atlas_coords")));
			p_list->push_back(PropertyInfo(Variant::VECTOR2I, PNAME("size_in_atlas")));
		} else {
			p_list->push_back(PropertyInfo(Variant::NIL, TTR("Alternative Tile"), PROPERTY_HINT_NONE, String(), PROPERTY_USAGE_CATEGORY));
			p_list->push_back(PropertyInfo(Variant::INT, PNAME("alternative_id")));
		}
	} else {
		p_list->push_back(PropertyInfo(Variant::NIL, TTR("Tiles"), PROPERTY_HINT_NONE, String(), PROPERTY_USAGE_CATEGORY));
	}