HITL: generic error when used incorrect model

[alex-krasn]

Describe the bug If user choose incorrect model (which not belongs a project) from "model compose" then run auto-labeling, the app throws generic error, and not perform auto labeling.

Repro:

1. Open project, then go to "Model Compose" view.
2. Choose random model.
3. Go back to "Editor" view, and run auto-labeling.
4. See the error.

Expected behavior Some meaningful error should be shown to user.