Add tile feature on the Stable Audio 3 VAE Encoder

### Feature Idea

Please add tile feature on the Stable Audio 3 VAE Encoder.
There is a middle ground for audio file sizes.
Small files fly through the encoding stage.
Large files switch the encoder into tiling mode, and are encoded fast.
Medium files hit a sticky patch where the encoder tries to encode the whole file and ends up taking a long time.

It would be great to have a tile encode option, just like there is a tile decode node.
Thanks.

### Existing Solutions

_No response_

### Other

_No response_