tu: Also disable stencil load for attachments not in GMEM

We were accidentally still emitting loads for D32S8 resolve attachments.

Cc: mesa-stable
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37919>

src/freedreno/vulkan/tu_pass.cc

@@ -1135,6 +1135,7 @@ tu_CreateRenderPass2(VkDevice _device,
       if (!att->gmem) {
          att->clear_mask = 0;
          att->load = false;
+         att->load_stencil = false;
       }
    }