Add Storage to PolkadotXcm for People Chains (#2959)

After People Rococo deployment, we noticed that `safeXcmVersion` wasn't
initialised.

I think it is due to `Storage` missing in the pallet's declaration. This
PR should fix it.

Author: NachoPal

cumulus/parachains/runtimes/people/people-rococo/src/lib.rs

@@ -428,7 +428,7 @@ construct_runtime!(
 
 		// XCM & related
 		XcmpQueue: cumulus_pallet_xcmp_queue::{Pallet, Call, Storage, Event<T>} = 30,
-		PolkadotXcm: pallet_xcm::{Pallet, Call, Event<T>, Origin, Config<T>} = 31,
+		PolkadotXcm: pallet_xcm::{Pallet, Call, Storage, Event<T>, Origin, Config<T>} = 31,
 		CumulusXcm: cumulus_pallet_xcm::{Pallet, Event<T>, Origin} = 32,
 		MessageQueue: pallet_message_queue::{Pallet, Call, Storage, Event<T>} = 34,
 

cumulus/parachains/runtimes/people/people-westend/src/lib.rs

@@ -428,7 +428,7 @@ construct_runtime!(
 
 		// XCM helpers.
 		XcmpQueue: cumulus_pallet_xcmp_queue::{Pallet, Call, Storage, Event<T>} = 30,
-		PolkadotXcm: pallet_xcm::{Pallet, Call, Event<T>, Origin, Config<T>} = 31,
+		PolkadotXcm: pallet_xcm::{Pallet, Call, Storage, Event<T>, Origin, Config<T>} = 31,
 		CumulusXcm: cumulus_pallet_xcm::{Pallet, Event<T>, Origin} = 32,
 		MessageQueue: pallet_message_queue::{Pallet, Call, Storage, Event<T>} = 34,