Background send does not notify when the background session fails

[benvillalobos]

Testing #319600

In the video, the background session fails to start for some reason, the session disappears from the list, and I'm left with no idea what happened.

Note: The first time this happened, the session failed as I was scrolling down to find the generated session. This meant I had zero idea what happened because it never showed in the session list.

20260608-1715-03.0222161.mp4