### 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 (current_tile_data_editor) {
		
		for (int i = 0; i < tile_set_atlas_source->get_tiles_count(); i++) {
			Vector2i coords = tile_set_atlas_source->get_tile_id(i);
			for (int j = 0; j < tile_set_atlas_source->get_alternative_tiles_count(coords); j++) {
				int alternative_tile = tile_set_atlas_source->get_alternative_tile_id(coords, j);
				if (alternative_tile == 0) {
					continue;
				}
				Rect2i rect = tile_atlas_view->get_alternative_tile_rect(coords, alternative_tile);
				Vector2 position = rect.get_center() + tile_set_atlas_source->get_tile_data(coords, alternative_tile)->get_texture_origin();
				Transform2D xform = alternative_tiles_control->get_parent_control()->get_transform();
				xform.translate_local(position);
				if (tools_button_group->get_pressed_button() == tool_select_button && selection.has({ coords, alternative_tile })) {
					continue;
				}
				TileMapCell cell;
				cell.source_id = tile_set_atlas_source_id;