Minor Uniques pallet improvements and XCM v3 preparations (#10896)

* Introduce Helper to Uniques for benchmark stuff

* Fixes

* Formatting

* Featuregate the Helper, include ContainsPair

* Introduce & use EnsureOriginWithArg

* Benchmarking

* Docs

* More ContainsBoth helpers

* Formatting

* Formatting

* Fixes

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

substrate/bin/node/runtime/src/lib.rs

@@ -27,9 +27,9 @@ use frame_election_provider_support::onchain;
 use frame_support::{
 	construct_runtime, parameter_types,
 	traits::{
-		ConstU128, ConstU16, ConstU32, Currency, EnsureOneOf, EqualPrivilegeOnly, Everything,
-		Imbalance, InstanceFilter, KeyOwnerProofSystem, LockIdentifier, Nothing, OnUnbalanced,
-		U128CurrencyToVote,
+		AsEnsureOriginWithArg, ConstU128, ConstU16, ConstU32, Currency, EnsureOneOf,
+		EqualPrivilegeOnly, Everything, Imbalance, InstanceFilter, KeyOwnerProofSystem,
+		LockIdentifier, Nothing, OnUnbalanced, U128CurrencyToVote,
 	},
 	weights::{
 		constants::{BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight, WEIGHT_PER_SECOND},
@@ -1348,6 +1348,9 @@ impl pallet_uniques::Config for Runtime {
 	type KeyLimit = KeyLimit;
 	type ValueLimit = ValueLimit;
 	type WeightInfo = pallet_uniques::weights::SubstrateWeight<Runtime>;
+	#[cfg(feature = "runtime-benchmarks")]
+	type Helper = ();
+	type CreateOrigin = AsEnsureOriginWithArg<EnsureSigned<AccountId>>;
 }
 
 impl pallet_transaction_storage::Config for Runtime {