Merge "Import AndroidX core and core-ktx from build 8516440" into tm-dev am: f1b035b9c4

Original change: https://googleplex-android-review.googlesource.com/c/platform/prebuilts/sdk/+/18090757

Change-Id: I8d3b490c4b5037b43bde47ce6104920ef30d238b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>