Vulkan: Fix dirty default attributes handling When invalidating default attributes, the mask to invalidate was set as the current dirty mask, but it should have been or'ed with it. The following test triggered a validation error on Linux: dEQP.GLES2/functional_default_vertex_attrib_mat4_vertex_attrib_4fv In this test, Vertex Array Bindings and Program dirty bits would set the default attrib dirty mask to all the default attributes, but the handling of Current Values dirty bits would mistakenly remove some of those dirty bits. Bug: angleproject:2786 Change-Id: Ife96621da7646102c1ce3b24e45f405e34a08b40 Reviewed-on: https://chromium-review.googlesource.com/c/1366797 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>