Step-3: Go to Manage apps and choose default apps (for Samsung you can go directly to Choose default apps page).
Step-4: In the Voice assistant and Assist & voice input pages you can see BluetoothRecordingTest app in the list (in Samsung: Digital assistant app -> Device assistance app). Choose BluetoothRecordingTest instead of default voice assistant app.
When you lunch AI voice from the watch, BluetoothRecordingTest app should lunch and start recording.