Revert^2 "Replace Context#sendStickyBroadcastAsUser()"

ConnectivityService is using Context#sendStickyBroadcastAsUser
to send sticky broadcast but this API is not able to call after
it becomes part of Connectivity mainline module. Thus, replace it
with Context#sendStickyBroadcast.

The original commit was reverted because of a test failure. This
reverted commit is bound to the fix and will submit together.

Bug: 177223402
Change-Id: I75b8494e8ee30f484f33e9a9a660c7f9ad75f368
Test: atest FrameworksNetTests
Test: atest CtsNetTestCases
Test: atest CtsNetApi23TestCases
Test: atest FrameworksNetIntegrationTests