bug: unable to identify/select component that has no content in builder canvas

[techfg]

Currently, when a component has no content, it is "invisible" on the builder canvas. It is available in the Component Index but even when clicking on it on the index, you cannot identify where it is on the canvas.

There needs to be a way to visualize the component on the canvas even when there is no content in it.

[humandad]

@techfg I made some improvements here in #4609. Let me know if the changes there address this enough. Thanks!