chore(engine): log about finished state updates in state root task

crates/engine/tree/src/tree/root.rs

@@ -480,6 +480,7 @@ where
                         );
                     }
                     StateRootMessage::FinishedStateUpdates => {
+                        trace!(target: "engine::root", "Finished state updates");
                         updates_finished = true;
                     }
                     StateRootMessage::ProofCalculated(proof_calculated) => {
@@ -542,6 +543,7 @@ where
                             has_new_proofs,
                             all_proofs_received,
                             no_pending,
+                            ?updates_finished,
                             "State check"
                         );