ScanManager: Use provided AdapterService for context

Avoid the duplicating context / AdapterService since both are the same.
By pasisng the adapter in parameter we also remove the need to set a
"testing overlay" of the adapter service and make the test more reliable

Bug: 330956986
Fix: 330956986
Bug: 380539632
Bug: 380510617
Bug: 380510672
Bug: 380536618
Bug: 380510672
Bug: 380510672
Bug: 380536573
Bug: 378542424
Bug: 346028665
Bug: 347474468
Test: atest ScanManagerTest --rerun-until-failure 3000
Flag: TEST_ONLY || The change in app are no-op
Change-Id: Ibb5c7c315ca89dc907be655aad35609b336201ea