Inconsistency between doc and actual behaviour: "Unlock VeraCrypt Volumes opens your volume"

Spotted while writing the test suite, trying to follow the steps we document as closely as possible: in our doc, after unlocking a volume, I read that “Unlock VeraCrypt Volumes opens your volume”. The way I understand it, it should open it in GNOME Files, no? Otherwise I’m not sure what “opens” means in this context. But on Tails 3.9, after unlocking a volume (unpartitionned USB stick) with Unlock VeraCrypt Volumes, GNOME Files is not started.

I see that commit 09f8b2e1364d6baa58206121937fc7bf6907d16f said it would “Fix automatic opening after unlocking”, which suggests we indeed want to open the just-unlocked volume (which, incidentally, would make it easier to write the test suite).

Is the current code behaviour what we want? If yes, then at least one person (me) was confused by the doc. If no, please reassign to segfault so that’s fixed.

Thanks!

Parent Task: #14468

Original created by @intrigeri on 15951 (Redmine)