message: Fix activate bid charge
diff: @@ -974,7 +974,7 @@ where
  })(),
  auction::METHOD_ACTIVATE_BID => (|| {
  - runtime.charge_system_contract_call(auction_costs.read_era_id)?;
  + runtime.charge_system_contract_call(auction_costs.activate_bid)?;
  let validator_public_key: PublicKey =
  Self::get_named_argument(runtime_args, auction::ARG_VALIDATOR_PUBLIC_KEY)?;
  