### 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 (navigation_polygon.is_valid()) {
				for (int i = 0; i < navigation_polygon->get_outline_count(); i++) {
					generic_tile_polygon_editor->add_polygon(navigation_polygon->get_outline(i));
				}
			}
		}
	} else {
		int count = get_edited_object()->get(count_property);
		if (base_type.is_empty()) {
			
			generic_tile_polygon_editor->clear_polygons();
			for (int i = 0; i < count; i++) {
				generic_tile_polygon_editor->add_polygon(get_edited_object()->get(vformat(element_pattern, i)));
			}
		}
	}
}
void EditorPropertyTilePolygon::setup_single_mode(const StringName &p_property, const String &p_base_type) {
	set_object_and_property(nullptr, p_property);
	base_type = p_base_type;
	generic_tile_polygon_editor->set_multiple_polygon_mode(false);
}
void EditorPropertyTilePolygon::setup_multiple_mode(const StringName &p_property, const StringName &p_count_property, const String &p_element_pattern, const String &p_base_type) {
	set_object_and_property(nullptr, p_property);
	count_property = p_count_property;
	element_pattern = p_element_pattern;
	base_type = p_base_type;
	generic_tile_polygon_editor->set_multiple_polygon_mode(true);
}
EditorPropertyTilePolygon::EditorPropertyTilePolygon() {