Enable refetching broken image on source change

[bradstiff]

This PR enables the component to refetch the image on a new source object prop, even if the component's error state value is set.

I removed the error state value from the dependencies of the effect that fetches the image. I also removed the logic that returns early from the effect when error is set.

I removed the logic that recreates the source object prop, as that value is a dependency of the effect that fetches the image. We need it to be stable, otherwise the component fetches the image over and over when an error occurs.

I removed the logic that directly edits source.hybridAssets in the interest of prop immutability. In the renderImageContent function, I spread the source object into a validatedSource object, and force hybridAssets to be true only when cloudUrl has a value.

Unfortunately, there is a lot of whitespace formatting changes that will make the PR hard to read.

[bradstiff]

Fixes #25