Treat time zone suggestions with unrecognized zones as unopinionated.

Bug: 173787057
Test: atest services/tests/servicestests/src/com/android/server/timezonedetector/*
Test: atest
services/tests/servicestests/src/com/android/server/timezonedetector/location/*

Change-Id: I1f700924b89bf0be30a8d19dfaae07e5654e1921
(cherry picked from commit 87f0d3b62b8d4d0ce074f478dd6bfa3a5a11ac07)
7 files changed