bug(EngineAPI): A node can crash due to clock being out of sync with Reth, causing JWT authentication to fail

The JWT validation can fail in Reth because the timestamp in the JWT token is outside the 60 second window that Reth requires. This causes the Malachite side to crash (code [ref](https://github.com/informalsystems/malaketh-layered-private/blob/f2bca0ab389bcd020cb3575156c0bd4d83c72f12/engine/src/engine_rpc.rs#L132)).

```
Reth1: ERROR engine::jwt-validator: Invalid JWT: IAT (issued-at) claim is not within ±60 seconds from the current time
Node1: ERROR Application error e=HTTP status client error (401 Unauthorized) for url (http://localhost:18551/)
```