Local Connection installer: No error reported if there are exceptions during "Install Dependencies" step

[dadmobile]

If flash_attn fails to build using the UI installer, the app will just report Success and continue. Then you'll just hit weird errors in the app later on.

It would be really helpful if we could figure out how to install from a wheel instead of trying to build flash_attn locally.

NOTE: It looks like flash_attn will fail to build on WSL right now without g++, which does not come installed on the default WSL ubuntu distribution.