[FuzzTest] Include Sources Needed for UTF-8 Domain Support

Change-Id: I246d4ccf9518ff649c0f62d0cf48ab626f7abc1a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6642961
Commit-Queue: Ali Hijazi <ahijazi@chromium.org>
Reviewed-by: Paul Semel <paulsemel@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1473522}
NOKEYCHECK=True
GitOrigin-RevId: 9ac117edfb0497c00d236128c071f8145370ac4f