Fix: EEVEE: VDB renders as bounding box when using Volume Scatter

Use the same approach as Cycles and only render the volume
objects if the shader is using any attribute.

Fix #124061

source/blender/draw/engines/eevee_next/eevee_sync.cc

@@ -371,6 +371,13 @@ void SyncModule::sync_volume(Object *ob,
     return;
   }
 
+  /* Do not render the object if there is no attribute used in the volume.
+   * This mimic Cycles behavior (see #124061). */
+  ListBase attr_list = GPU_material_attributes(material.volume_material.gpumat);
+  if (BLI_listbase_is_empty(&attr_list)) {
+    return;
+  }
+
   auto drawcall_add = [&](MaterialPass &matpass, gpu::Batch *geom, ResourceHandle res_handle) {
     if (matpass.sub_pass == nullptr) {
       return;