Llama example bug on M3

[jorgeantonio21]

I have been experimenting with the Luminal examples on my Macbook M3, and every time I run

cargo run --release --features metal

I get a non-sensical answer, like:

```python<|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|><|reserved_special_token_250|
...