Merge "Revert^2 "Deprecate android.hidl.allocator after U vintf"" into main am: 83f416a5d5 am: bab21bf23b am: c1044c182f

Original change: https://android-review.googlesource.com/c/platform/system/libhidl/+/2907115

Change-Id: I3678cf195ce26cf7f3fdc80b76061e33c75819f8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>