Fix WifiSummaryUpdaterTest issues for registerReceiver security design

- Security team add new interface to Context.registerReceiver() with a
third parameter for new security design.

- The new interface might have some issues in the test environment.

- Spy the registerReceiver() and unregisterReceiver() to avoid
unexpected issues.

Bug: 214938188
Test: manual test
make RunSettingsRoboTests ROBOTEST_FILTER=WifiSummaryUpdaterTest

Change-Id: Ibd1c5c1f7b4309ad5079f33bb232f249c6bd997f