### 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 (selected.alternative > 0 && !removed.has(selected.tile)) {
					
					undo_redo->add_do_method(tile_set_atlas_source, "remove_alternative_tile", selected.tile, selected.alternative);
					undo_redo->add_undo_method(tile_set_atlas_source, "create_alternative_tile", selected.tile, selected.alternative);
					if (per_tile.has(selected.tile)) {
						for (List<const PropertyInfo *>::Element *E_property = per_tile[selected.tile].front(); E_property; E_property = E_property->next()) {
							Vector<String> components = E_property->get()->name.split("/", true, 2);
							if (components.size() >= 2 && components[1].is_valid_int() && components[1].to_int() == selected.alternative) {
								String property = E_property->get()->name;
								Variant value = tile_set_atlas_source->get(property);
								if (value.get_type() != Variant::NIL) {
									undo_redo->add_undo_method(tile_set_atlas_source, "set", E_property->get()->name, value);
								}
							}
						}
					}
				}
			}
			undo_redo->commit_action();
			_update_fix_selected_and_hovered_tiles();
			_update_tile_id_label();
		} break;
		case TILE_CREATE: {
			undo_redo->create_action(TTR("Create a tile"));
			undo_redo->add_do_method(tile_set_atlas_source, "create_tile", menu_option_coords);
			Array array;
			array.push_back(menu_option_coords);
			array.push_back(0);
			undo_redo->add_do_method(this, "_set_selection_from_array", array);
			undo_redo->add_undo_method(tile_set_atlas_source, "remove_tile", menu_option_coords);