Also update test expectations for texture3D.

Bug: angleproject:3188
Change-Id: If8a8e0a83a86c48c2afb0c36534c1e9d4120fe47
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1682782Reviewed-by: Ian Elliott <ianelliott@google.com>
Reviewed-by: Lingfeng Yang <lfy@google.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Cody Northrop <cnorthrop@google.com>