Merge "Allow app usage of AccessibilityInteractionClient#getInstance and clearCache before T" into sc-dev am: 69d87799 am: 89704a59 am: 2f82a8c6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15181867

Change-Id: I964f4bc59916c13209c184f167ce207227e7d8b9