API changes for addressing API Council comments. Bug:222291418 Bug:222291433 Bug:222291394 Bug:222291470 Bug:222291434 Bug:222291543 Bug:222291565 Test: atest CtsNearbyFastPairTestCases Ignore-AOSP-First: new project Change-Id: If85c8071503a79b8057d5703d4276adba4403c00