RendererVk: Enable VK_KHR_image_format_list on SwiftShader. This reverts commit 08b42714f51dc87e16d52757b4b115037218a4ba. Bug: angleproject:5281 Bug: chromium:1245774 Change-Id: I773d95225301ccf3c2807fd2269b6d7da1195a16 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3223679 Commit-Queue: Lubosz Sarnecki <lubosz.sarnecki@collabora.com> Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>