zink: don't init mutable resource bit for swapchain images

these are either already mutable (for srgb) or invalid usage

fixes #8970

cc: mesa-stable

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22876>

src/gallium/drivers/zink/zink_context.c

@@ -1998,7 +1998,7 @@ zink_set_sampler_views(struct pipe_context *pctx,
             if (!ctx->unordered_blitting)
                res->obj->unordered_read = false;
          } else if (!res->obj->is_buffer) {
-            if (res->base.b.format != b->image_view->base.format)
+            if (!res->obj->dt && res->base.b.format != b->image_view->base.format)
                /* mutable not set by default */
                zink_resource_object_init_mutable(ctx, res);
             if (res->obj != b->image_view->obj) {