In the loader, make Hero selection easier

When Hero mode is OFF : artists can just load the product, no problem, they get the latest version.

When Hero mode is ON : in the Loader, the default version that is selected is the latest version, and not the Hero version :

Problem : if artists want to import a Hero, they need to manually select the [v] for each product they load (which can mean 4 or 5 textures, in the case of published Substance).

If Hero mode is active, it would make sense to have it available easily in the Loader, which means force the Hero to be on the first position among the versions list.

I think it would help avoid user errors, as we could ask users to not touch anything and just load.

It is also discussed here :

https://community.ynput.io/t/in-the-loader-make-hero-selection-easier/2537