Reduce WanAnimate TorchAO test input sizes to prevent OOM (#13541)
Shrink dummy inputs to avoid OOM on devices without FlashAttention.
Reduce hidden_states spatial from 64x64 to 16x16 and frames from 21 to 5,
bringing self-attention sequence length from 21,504 to 320.
Co-authored-by: dg845 <58458699+dg845@users.noreply.github.com>
Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>