### 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 (tools_button_group->get_pressed_button() == tool_select_button) {
		if (!selection.is_empty()) {
			tile_proxy_object->edit(tile_set_atlas_source, selection);
		}
		tile_inspector->set_visible(!selection.is_empty());
		tile_inspector_no_tile_selected_label->set_visible(selection.is_empty());
	} else {
		tile_inspector->hide();
		tile_inspector_no_tile_selected_label->hide();
	}
	tile_inspector->set_read_only(read_only);
}
void TileSetAtlasSourceEditor::_update_tile_data_editors() {
	String previously_selected;
	if (tile_data_editors_tree && tile_data_editors_tree->get_selected()) {
		previously_selected = tile_data_editors_tree->get_selected()->get_metadata(0);
	}
	tile_data_editors_tree->clear();
	if (tile_set.is_null()) {
		return;
	}
	TreeItem *root = tile_data_editors_tree->create_item();
	TreeItem *group;
#define ADD_TILE_DATA_EDITOR_GROUP(text)               \