Wifi scanner throttling

[dsoutw]

All background apps combined can scan one time in a 30-minute period.
This limits the ability to update the status of the WiFi rules in real-time.
https://developer.android.com/develop/connectivity/wifi/wifi-scan#wifi-scan-throttling

However, if the wifi is not currently connected, then the system may automatically scan the wifi in the background.

[dsoutw]

Wifi auto scan reference:
https://source.android.com/docs/core/connect/wifi-scan
https://source.android.com/docs/core/connect/wifi-network-selection