refactor autoencoder tests (vq, kvae_video, oobleck, consistency_decoder, tiny, vidtok) (#13849)
* refactor vq tests
* refactor autoencoder_kl_kvae_video tests
* refactor autoencoder_oobleck tests
* refactor consistency_decoder_vae tests
* refactor autoencoder_tiny tests
* refactor autoencoder_vidtok tests
* remove unused base_precision and test_outputs_equivalence skips
---------
Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>