Vulkan: Enable further dEQP 3.1 tests As TimVP pointed out, a previous change enabled some previously-skipped texture gather 2d_array tests. Enabling them. Bug: angleproject:3605 Bug: angleproject:3189 Change-Id: I3ad190131339a04441fdd05e23ff3b7ac724dc83 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1797655 Reviewed-by: Tim Van Patten <timvp@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Tobin Ehlis <tobine@google.com>