wallet: Enforce that storage is using the same descriptors

[bennyhodl]

There is a vague error currently when a storage is initialized and the descriptor does not match the one stored

[bennyhodl]

https://github.com/bitcoindevkit/bdk/blob/1a6a78a500d68d18593c0cc843f906ee58398d80/crates/wallet/src/wallet/mod.rs#L514