* Silence known deprecation warnings
1. Prefixes known instances of usages of client.backend and client.import_lock with `#[allow(deprecated)]` to silence the warnings. 2. Remove file-global `#![allow(deprecated)]` used in these cases. Both to prevent us overlooking externally caused deprecation messages.
* fixing missing ;
* fix missing test cases
* move deprecated markers to make CI happy
* move deprecated markers to make CI happy
* attempt to fix the test
* bumping impl_version of node runtime
* Minor cleanup