Upgrade emulator to emu-master-dev build 8546606 am: cada9484b6 am: 1c6adb81de

Original change: https://android-review.googlesource.com/c/platform/prebuilts/android-emulator/+/2088490

Change-Id: I33db0d4391762e58a558fc9a5404f8218b29f7d2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>