Remove unwrap() in runtime_lock

[tomaka]

Fix #2763

This PR gives a proper error type to the state_trie_root_hash function (which retrieves the state trie root hash of a block from the network), and makes runtime_lock properly propagates the error instead of unwrapping.

[mergify]

Automatically approving tomaka's pull requests. This auto-approval will be removed once more maintainers are active.

[github-actions]

twiggy diff report

Difference in .wasm size before and after this pull request.

---

 Delta Bytes │ Item
─────────────┼──────────────────────────────────────────────────────────────────────────────────────────────────────
       -3080 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::hac87440ab79ef7d4
       +2888 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::hb3e7964db2b95cad
       -2080 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::hf0e90e5817cd3f6e
       +2077 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h3090b5de4c9a37b8
       -1974 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h5bdbacb47358f6c7
       +1971 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::ha0c3c33b94551c29
       +1931 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h624652bb5b9d09a5
       -1880 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::hb13ef27649875008
       +1877 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h30283ab1af011596
       -1857 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h1f678157b87abe73
       +1854 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h5b25c15184222fb6
       -1818 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h50dda0251818fb85
       +1730 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h366ef2cb2bba7d14
       +1662 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::hf8cff5d6896c7c05
       -1621 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::heb783535d9e301e4
       -1620 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::hce711f939c917192
       -1585 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h6e7cd42d56f33ab5
       +1585 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::hb3313826ea04fb1c
       -1374 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::h51e24dfa073db2eb
       +1374 ┊ <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll::hd3cff856f3a4c049
        +580 ┊ ... and 176 more.
       +1374 ┊ Σ [196 Total Rows]

[melekes]

👍