Vulkan: Further refine invalidate for depth/stencil Bug: angleproject:5079 Change-Id: Idc732b1e6729b2776d66c63c3ae2bd94e11bdbb5 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2422684 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Ian Elliott <ianelliott@google.com>