fee_for_submit_call does not include per-byte fee

[coriolinus]

polkadot/runtime/common/src/elections.rs

Lines 53 to 61 in 010ea97

	pub fn fee_for_submit_call<T, WeightToFee, WeightInfo>(multiplier: Perbill) -> WeightToFee::Balance
	where
	T: pallet_election_provider_multi_phase::Config,
	WeightToFee: WeightToFeePolynomial,
	WeightInfo: pallet_election_provider_multi_phase::WeightInfo,
	{
	let expected_weight = WeightInfo::submit(T::SignedMaxSubmissions::get());
	multiplier * WeightToFee::calc(&expected_weight)
	}

Its signature should include an expected_solution_size parameter which is used to more accurately estimate what the submit call costs.