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

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

Change-Id: I750894ea0709273b7d473b8f4204d7e78cac44f2
tree: c5ba03455db0f136d5f7f1c00f48989225d89423
  1. nearby/