[snapshot] Lack of interactive stdin causes unhandled exception on `multipass restore`

[tobe2098]

Describe the bug
I am trying to restore the state of a VM without interactive stdin. If the --destructive flag is not used, it results in an unhandled exception.

└─[2] echo "no" | multipass stop a             
└─[λ] echo "no" | multipass restore a.snapshot1
[2026-04-15T17:44:54.113] [error] [client] Caught an unhandled exception: Unable to query client for confirmation. Use '--destructive' to automatically discard current machine state.

To Reproduce
How, and what happened?

1. multipass launch -n a && multipass stop a
2. multipass snapshot a
3. echo "no" | multipass restore a.snapshot1

Expected behavior
Multipass should handle the exception and output the error message to the user.

Additional info

• OS: Ubuntu 24.04 (authd)
• CPU architecture or model: amd64
• multipass version: 1.17.0-dev