Expose new APIs from ICU 71 am: 22d35c58b7 am: b02a8a931a

Original change: https://android-review.googlesource.com/c/platform/external/icu/+/2119233

Change-Id: I68acf98e49f7a532735c90cf4f642e3d08f00d67
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>