zcash-android-wallet-sdk: Consider `recoverUntil` parameter persistence

[HonzaR]

Is your feature request related to a problem? Please describe.

There are a few corner cases in which we don't currently fill in the recoverUntil parameter to the Rust layer

Describe the solution you'd like

E.g. when starting the wallet for the first time without an internet connection established, we could persist and later set up the recoverUntil parameter from the persistence

Alternatives you've considered

Persisting the recoverUntil with the PersistableWallet object with a possible error value indicating that the parameter wasn't set.

Additional context