Frozen-aware RemoteCallbackList

Add RemoteCallbackList APIs that adjusts callback behavior, e.g.
queueing or dropping callbacks based on the frozen state of the target
process.

Flag: android.os.binder_frozen_state_change_callback
Test: atest android.os.cts.RemoteCallbackListTest
Change-Id: Ia1f37c52a49657546ef3779b6eb5dadb9dcc9bf5
Bug: 361157077
API-Coverage-Bug: 372923111
2 files changed