Make AppOpsService verification error less informative

Unless the hardcoded AppOpsService DEBUG flag is set to true, do not
include the resolved UID of a package in the verifyAndGetBypass
exception message, as this potentially leaks data to third party apps
that manage to bind to AppOpsService.

Bug: 184474751
Test: manual
Change-Id: Ifdcf2cce3e8f939ca9f206a4bf8ac0238000f4c0