Companion to Implementing MaxEncodedLen for generate_solution_type #11032 (#5145)

* Fixing `generate_solution_type`
This is needed after changes to substrate

* `VoterSnapshotPerBlock` -> `MaxElectingVoters`

* rename `SizeBound` to `MaxVoters`

* cargo update -p sp-io

* ignore failing test

* spell-check

* fix pub OffchainRepeat

Co-authored-by: kianenigma <kian@parity.io>
Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

polkadot/runtime/westend/src/lib.rs

@@ -351,7 +351,7 @@ parameter_types! {
 	// 1 hour session, 15 minutes unsigned phase, 4 offchain executions.
 	pub OffchainRepeat: BlockNumber = UnsignedPhase::get() / 4;
 
-	/// We take the top 22_500 nominators as electing voters..
+	/// We take the top 22500 nominators as electing voters..
 	pub const MaxElectingVoters: u32 = 22_500;
 	/// ... and all of the validators as electable targets. Whilst this is the case, we cannot and
 	/// shall not increase the size of the validator intentions.
@@ -364,6 +364,7 @@ frame_election_provider_support::generate_solution_type!(
 		VoterIndex = u32,
 		TargetIndex = u16,
 		Accuracy = sp_runtime::PerU16,
+		MaxVoters = MaxElectingVoters,
 	>(16)
 );