popupFlow
A Flow that emits Popup events when inactivity popups should be displayed.
This flow emits popups received as new events or when the conversation was recovered and the popup is the latest event in the conversation. It is a cold flow: each collection establishes its own subscription, so collecting again after a reconnect resumes delivery. Collect it for the whole time popups should be observed; popups delivered while no collector is active are not retained.
To stop listening, cancel the Flow collection — the flow is cold and holds no resources.