[Mosaic] Allow vector::Extract for non-32 bits vector result.
It should have been supported in apply. This allows us to run batched non-32 bits matmuls.
https://github.com/jax-ml/jax/blob/0a572631b8791b08a975c9a7087f801a02f5d1ee/jaxlib/mosaic/dialect/tpu/transforms/canonicalize_mosaic.cc#L504-L509
PiperOrigin-RevId: 786746709