### 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
ADD_TILE_DATA_EDITOR(group, vformat(TTR("Custom Data %d"), i), editor_name);
		} else {
			ADD_TILE_DATA_EDITOR(group, prop_name, editor_name);
		}
		
		
		if (tile_data_editors.has(editor_name) && ((TileDataDefaultEditor *)tile_data_editors[editor_name])->get_property_type() != prop_type) {
			tile_data_editors[vformat("custom_data_%d", i)]->queue_free();
			tile_data_editors.erase(vformat("custom_data_%d", i));
		}
		if (!tile_data_editors.has(editor_name)) {
			TileDataDefaultEditor *tile_data_custom_data_editor = memnew(TileDataDefaultEditor());
			tile_data_custom_data_editor->hide();
			tile_data_custom_data_editor->setup_property_editor(prop_type, editor_name, prop_name);
			tile_data_custom_data_editor->connect("needs_redraw", callable_mp((CanvasItem *)tile_atlas_control_unscaled, &Control::queue_redraw));
			tile_data_custom_data_editor->connect("needs_redraw", callable_mp((CanvasItem *)alternative_tiles_control_unscaled, &Control::queue_redraw));
			tile_data_editors[editor_name] = tile_data_custom_data_editor;
		}
	}
	for (int i = tile_set->get_custom_data_layers_count(); tile_data_editors.has(vformat("custom_data_%d", i)); i++) {
		tile_data_editors[vformat("custom_data_%d", i)]->queue_free();
		tile_data_editors.erase(vformat("custom_data_%d", i));
	}
	if (tile_set->get_custom_data_layers_count() == 0) {
		item = tile_data_editors_tree->create_item(group);
		item->set_icon(0, get_theme_icon("Info", "EditorIcons"));
		item->set_icon_modulate(0, disabled_color);
		item->set_text(0, TTR("No custom data layers"));
		item->set_tooltip_text(0, TTR("Create and customize custom data layers in the inspector of the TileSet resource."));
		item->set_selectable(0, false);