switch TelecomManager List getters to ParceledListSlice

It was shown that given a large phoneAccountHandles that are
over 1 mb, a TransactionTooLarge exception can be silently thrown
causing an empty list to be returned.

In order to prevent this behavior, all Lists that return a
PhoneAccountHandle or PhoneAccount have been switched to
ParceledListSlice.

bug: 236263294
Test: atest android.telecom.cts.PhoneAccountRegistrarTest
             #testRegisterPhoneAccountHandleWithFieldOverLimit
Change-Id: Ibc3814dabd59cf9f0f9505b88f2146a4c3c5e015
Merged-In: Ibc3814dabd59cf9f0f9505b88f2146a4c3c5e015