Catch UnsupportedOperationException on calling mdns am: a49e8e0b7b

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2837541

Change-Id: Iadaaef9904abf467e02e56885877a81a8f700d21
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>