Fix test fail caused by proguard trimmed out reflection callback. am: 44c53a6729 am: 1920f817d6

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Nearby/+/17046184

Change-Id: Ife172e36ff759d916bf1a9566713fdb8164c16f2
tree: 18b867aac35fdde20a2fd228032a7e047fb3e49a
  1. nearby/