Refactor for ClientTransaction to return boolean for RemoteException

Also clean up test as we no longer recycle for ClientTransaction.

Bug: 323801078
Test: atest WmTests:ClientLifecycleManagerTests
Flag: com.android.window.flags.cleanup_dispatch_pending_transactions_remote_exception
Change-Id: I0f467d3660f72c8fdb11ab94d04f979e3d5bd8fe