Store native failure reason in session failure message

If a native process crashing during boot causes a session
to revert, store the name of this process in the failure
message of a staged session. This will allow the native
process to be exposed in the PackageManager dumpsys for
debugging purposes.

Test: atest ApexRollbackTests#testAutomaticBootLoopRecovery,
	adb shell dumpsys package
Bug: 149100937
Change-Id: I4a6140d4a72558834baf2ea0d5d215bb402f989d