[BUG][ABReader] Read From Folder throws exception with unknown file types

[srowlandsdev]

Description:
As a user if I run the Read From Folder method and point it to a directory that has asset bundles as well as other files then an Exception will be thrown

Repro Steps:

1. Open the unity project
2. Select ABReader > Asset Bundle Folder > Read From Folder
3. Choose an asset bundle folder that also contains non-bundle files
4. Await return in console

Repro Rate:
100%