### 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 (mm.is_valid()) {
		tile_atlas_control->queue_redraw();
		tile_atlas_control_unscaled->queue_redraw();
		alternative_tiles_control->queue_redraw();
		alternative_tiles_control_unscaled->queue_redraw();
		if (drag_type == DRAG_TYPE_MAY_POPUP_MENU) {
			if (Vector2(drag_start_mouse_pos).distance_to(alternative_tiles_control->get_local_mouse_position()) > 5.0 * EDSCALE) {
				drag_type = DRAG_TYPE_NONE;
			}
		}
	}
	Ref<InputEventMouseButton> mb = p_event;
	if (mb.is_valid()) {
		Vector2 mouse_local_pos = alternative_tiles_control->get_local_mouse_position();
		if (mb->get_button_index() == MouseButton::LEFT) {
			if (mb->is_pressed()) {
				
				if (tools_button_group->get_pressed_button() == tool_select_button) {
					Vector3 tile = tile_atlas_view->get_alternative_tile_at_pos(mouse_local_pos);
					selection.clear();
					TileSelection selected = { Vector2i(tile.x, tile.y), int(tile.z) };
					if (selected.tile != TileSetSource::INVALID_ATLAS_COORDS) {
						selection.insert(selected);
					}
					_update_tile_inspector();
					_update_tile_id_label();
				}
			}
		} else if (mb->get_button_index() == MouseButton::RIGHT) {
			if (mb->is_pressed()) {