Handle closed SAs in requestIpSecTransformState

This patch enables requestIpSecTransformState to handle transforms
that already closed. Previously, the method will throw an exception.
Now it will notify the error via the caller provided OutcomeReceiver.

Bug: 336897538
Test: atest CtsNetTestCases:IpSecManagerTest(new test)
Flag: EXEMPT mainline code
Change-Id: Ibcf0092d0caa007c6b4cb9e5a690b8e1a5596157
2 files changed