core/state: increment storage counters in binary trie IntermediateRoot path

The binary trie fast path in IntermediateRoot() directly iterates
uncommittedStorage and calls UpdateStorage/DeleteStorage, bypassing the
per-account updateTrie() method. However, it omitted the StorageUpdated
and StorageDeleted counter increments that updateTrie() performs, causing
the "Slow block" JSON log to always report storage_slots_written=0 in
binary trie mode.

Add the missing counter increments to match the behavior in
state_object.go's updateTrie().

core/state/statedb.go

@@ -881,10 +881,12 @@ func (s *StateDB) IntermediateRoot(deleteEmptyObjects bool) common.Hash {
 					if err := s.trie.UpdateStorage(addr, key[:], common.TrimLeftZeroes(value[:])); err != nil {
 						s.setError(err)
 					}
+					s.StorageUpdated.Add(1)
 				} else {
 					if err := s.trie.DeleteStorage(addr, key[:]); err != nil {
 						s.setError(err)
 					}
+					s.StorageDeleted.Add(1)
 				}
 			}
 		}