### 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
undo_redo->add_undo_method(this, "_set_selection_from_array", _get_selection_as_array());
			undo_redo->commit_action();
			_update_tile_id_label();
		} break;
		case TILE_CREATE_ALTERNATIVE: {
			undo_redo->create_action(TTR("Create tile alternatives"));
			Array array;
			for (const TileSelection &E : selection) {
				if (E.alternative == 0) {
					int next_id = tile_set_atlas_source->get_next_alternative_tile_id(E.tile);
					undo_redo->add_do_method(tile_set_atlas_source, "create_alternative_tile", E.tile, next_id);
					array.push_back(E.tile);
					array.push_back(next_id);
					undo_redo->add_undo_method(tile_set_atlas_source, "remove_alternative_tile", E.tile, next_id);
				}
			}
			undo_redo->add_do_method(this, "_set_selection_from_array", array);
			undo_redo->add_undo_method(this, "_set_selection_from_array", _get_selection_as_array());
			undo_redo->commit_action();
			_update_tile_id_label();
		} break;
		case ADVANCED_AUTO_CREATE_TILES: {
			_auto_create_tiles();
		} break;
		case ADVANCED_AUTO_REMOVE_TILES: {
			_auto_remove_tiles();
		} break;
	}
}
void TileSetAtlasSourceEditor::shortcut_input(const Ref<InputEvent> &p_event) {