cli: Workflows feel very chatty/alerty mixing terminal and notifications

When using the Aspire VS Code extension the commands appear to create a very chatty environment and also notification heavy.

https://github.com/user-attachments/assets/4abd9a1d-0482-44f8-896f-42ad629bf106

As observed in this video for 'new' (but repeated for nearly all commands):
- command invoked from CP
- terminal window opens and calls a CLI command
- quick picks are chosen
- each selection is met with terminal output AND notification popups
- finalization steps show summary of in terminal and notification

I would pick one -- if the terminal is the driver and I started from the UI, maybe create the terminal but don't bring focus to it (using `TerminalOptions` when creating and naming it so it can be reused at least too if needed.