Review FairFace age prompts

[sofia-llacer-caro]

The 0-2 age category consistently gets high probability — likely a prompt issue. Consider whether all age bins make sense for a webcam-based workshop setting.

[lluisgomez]

@sofia-llacer-caro thanks! this works much better now. Just one minor comment: some "age descriptions" are quite long and they are cut in the UI. shall we add a "pop-up" functionality so that we can read the full description when the user puts mouse pointer over the category?