Update D8 R8 to 8.4.4-dev am: 5cfcd8308f am: 9c4c298cca am: 5530ff72ec

Original change: https://android-review.googlesource.com/c/platform/prebuilts/r8/+/2894901

Change-Id: I91d5e775a302a4c69620d3d8763fd9d42da3774d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>