Put an app in standby, make it show a toast and ensure that it doesn't come out of standby. This is to test for a bug fix for the same behavior. Bug: 31544592 Test: cts-tradefed run commandAndExit cts -m CtsHostsideNetworkTests -t com.android.cts.net.HostsideRestrictBackgroundNetworkTests#testAppIdle_toast Change-Id: I796ecde8e346c308a27969d873e3ce384414fee3