message: allow a scene to have both transmission and reflection
  what's not allowed at this point is an object which has both screen
  space refraction and reflection.
  this is accomplished by just always disabling screen-space reflections
  for the translucent step of the refraction pass.
diff: @@ -813,6 +813,7 @@ FrameGraphId<FrameGraphTexture> FRenderer::refractionPass(FrameGraph& fg,
  config.refractionLodOffset = refractionLodOffset;
  config.clearFlags = TargetBufferFlags::NONE;
  + config.hasScreenSpaceReflections = false;
  output = colorPass(fg, "Color Pass (transparent)",
  desc, config, colorGradingConfig, translucentPass, view);
  