Fix AdapterServiceTest that depend on previous GattService flow

When the flag is set as true and cleaned up, these tests will either be
modified to remove dependency of GattService lifecycle or deleted
completely.

Test: atest AdapterServiceTest
Bug: 342308359
Bug: 351943578
Bug: 313335632
Bug: 267361243
Bug: 327503826
Change-Id: I91eecff4035ff9a32fca065ad4365262be32f5b0