[MS48.5]Remove INetworkStatsSession from SummaryForAllUidLoader

SummaryForAllUidLoader is using INetworkStatsSession hidden APIs, which
cannot be accessed after moving into the mainline module. So, replace
and remove those hidden API usages.

Test: atest clockwork-settings-robotests
      make RunSettingsRoboTests -j40
      make RunSettingsLibRoboTests
           ROBOTEST_FILTER=DataUsageControllerTest
      make RunSettingsLibRoboTests
           ROBOTEST_FILTER=NetworkCycleChartDataLoaderTest
      make RunSettingsLibRoboTests
           ROBOTEST_FILTER=NetworkCycleDataForUidLoaderTest
      make RunSettingsLibRoboTests
           ROBOTEST_FILTER=NetworkCycleDataLoaderTest
      make RunSettingsLibRoboTests
           ROBOTEST_FILTER=DataUsageUtilsTest
Bug: 204830222
Ignore-AOSP-First: Related API conflict, need master first.
Change-Id: Iac733a5021d0d79111c0350b694e4ed0ec90e262