### 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
String property;
	if (tools_button_group->get_pressed_button() == tool_select_button && tile_inspector->is_visible() && !tile_inspector->get_selected_path().is_empty()) {
		Vector<String> components = tile_inspector->get_selected_path().split("/");
		if (components.size() >= 1) {
			property = components[0];
			
			if (property.begins_with("terrains_")) {
				property = "terrain_set";
			}
		}
	} else if (tools_button_group->get_pressed_button() == tool_paint_button && tile_data_editors_tree->get_selected()) {
		property = tile_data_editors_tree->get_selected()->get_metadata(0);
		tile_data_editor_dropdown_button->set_text(tile_data_editors_tree->get_selected()->get_text(0));
	}
	
	for (const KeyValue<String, TileDataEditor *> &E : tile_data_editors) {
		E.value->hide();
		E.value->get_toolbar()->hide();
	}
	if (tile_data_editors.has(property)) {
		current_tile_data_editor = tile_data_editors[property];
	} else {