fix: calculate state root for auto-seal (#2744)

Co-authored-by: Roman Krasiuk <rokrassyuk@gmail.com>

crates/consensus/auto-seal/src/task.rs

@@ -200,6 +200,11 @@ where
                                 BlockBody { transactions: body, ommers: vec![], withdrawals: None };
                             header.gas_used = gas_used;
 
+                            // calculate the state root
+                            let state_root =
+                                executor.db().db.0.state_root(post_state.clone()).unwrap();
+                            header.state_root = state_root;
+
                             storage.insert_new_block(header.clone(), body);
 
                             let new_hash = storage.best_hash;