Critical notification on Pixel 7 not persistent and no sound in silent mode

I’m trying to send a notification to my Pixel 7 using the companion app. I would like the notification to be persistent and to ring even if the phone is in silent mode. This is the action I am using:

action: notify.mobile_app_pixel_7
data:
  message: Test
  title: Test
  data:
    priority: high
    ttl: 0
    channel: alarm_stream
    persistent: true

I receive the notification, but it is not persistent and does not override silence mode. Am I missing something?

Known issue unfortunately