Batch kernel refactoring: align MASM and Rust advice ordering

Rather than this, I would follow the tx kernel pattern where we setup the advice stack in `TransactionAdviceInputs` in the order in which the tx kernel will read it. This approach would also avoid the explicit `push_mapvaln`s in prepare_batch.

The `push_mapvaln` approach is more explicit, which I also like, but I think the upsides outweigh the downsides.

Separately, I think we should introduce `BatchAdviceInputs` so the advice logic has a better home.

_Originally posted by @PhilippGackstatter in https://github.com/0xMiden/protocol/pull/2905#discussion_r3812858989_