Can't use a URL in an image texture

[nearnshaw]

When configuring the texture of a Material component, I can paste a path to a local file, but I can't paste a URL to an external image from the web. This should be possible to do. Not for any image, there are CORS limitations, but if the site allows it, I should be able to.

The UI of the Editor however marks my string as invalid.

For example if I try to paste this string, that points to an image that I know works in-world (it's used by the UI Utils library)

https://decentraland.org/images/ui/dark-atlas-v3.png