Improve the Invoker log formatting

[igalshilman]

When users hit a non-determinism issue, this currently seems to be the error they get:

runtime-1          | 2024-12-19T15:28:09.215912Z WARN restate_invoker_impl
runtime-1          |   Error when executing the invocation, retrying in 11s 146ms 172us 565ns.
runtime-1          |     error: [RT0007] Error message received from the SDK with related entry Some(InvocationErrorRelatedEntry { related_entry_index: Some(3), related_entry_name: Some("xxx"), related_entry_type: Some(Run) }): [570] expected message type RunEntry but was CallEntry
runtime-1          |     restate.error.code: RT0007
runtime-1          |     restate.invocation.id: inv_1h7YySg89QqI5T6A8eFRTJUnQhfThHshAl

runtime-1          | on rt:pp-0