Fix array-related errorprone warnings

The ArrayEquals, ArrayHashCode, ArrayToString, and
ArraysAsListPrimitiveArray errorprone findings were
demoted from errors to warnings. Fix existing
occurrences of them so they can be made errors again.

Bug: 242630963
Test: RUN_ERROR_PRONE=true m javac-check
Change-Id: I96d0828c9e2c634d496e99878aeb185e6a824e64