The purpose of this call is to initialize the Kusama side of the Polkadot<>Kusama bridge.

It does the following:

Calls `forceXcmVersion` on following system parachains to set XCMv3 between:

    Kusama AH <-> Kusama BH
    Kusama BH -> Polkadot BH
    Kusama AH -> Polkadot AH

It then calls `bridgePolkadotGrandpa::initialize()` with the initial configuration for the Polkadot on-chain light-cLient running on Kusama Bridge Hub.
 

Whitelisted by: https://kusama.subsquare.io/fellowship/referenda/62

See [`Pallet::dispatch_whitelisted_call_with_preimage`].

- Problem Statement: Initializing the Kusama side of the PolkadotKusama bridge for system parachains.
- Significance: Establishing XCMv3 connections between Kusama and Polkadot parachains.
- Proposed Solution: Calling `forceXcmVersion` on specific system parachains and initializing the Polkadot on-chain light-client on Kusama Bridge Hub.
- Expected Outcomes: Enhanced interoperability between Kusama and Polkadot parachains.

#354 Initialize Polkadot GRANDPA light-client running on Kusama BridgeHub