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

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

Change-Id: I645e3a99d9fdc1aec4a7130d1a642387e4cf4ef5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>