[automerger skipped] Made AutofillId.withoutSession is testable. am: 5f74d605ce -s ours

am skip reason: Change-Id I27d1227f858aac83b3de1cb8ef719edf177524dc with SHA-1 24abde551e is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11947523

Change-Id: I6b4de66b237613433163db400819170930f18e92