Append picker to the shared tile-picker stack, creating the stack on demand. When requestId is supplied, the picker is shown only while that prompt is the focused one; without a requestId the picker is always visible.
picker
requestId
Optional
Prompt requestId to gate visibility on.
Append
pickerto the shared tile-picker stack, creating the stack on demand. WhenrequestIdis supplied, the picker is shown only while that prompt is the focused one; without arequestIdthe picker is always visible.