More fixes to XCM V3

[albertov19]

Probably some work still needed as this will change with the next runtime

[jboetticher]

I'm approving this, but I think that you could make a helper function since the same logic seems to be repeating:

export async function getXCMVersion(api) {
    // Get XCM Version - Not great but there is no chain state approach
    const xcmpQueueVersion = (await api.query.xcmpQueue.palletVersion()) as any;
    const xcmSafeVersion = (await api.query.polkadotXcm.safeXcmVersion()) as any;
    const xcmVersion = `V${Math.max(xcmpQueueVersion, xcmSafeVersion).toString()}`;
  
    // Get XCM Versioned Multilocation Type
    const isV3 = xcmVersion === "V3";
    const xcmType = isV3 ? "XcmV3MultiLocation" : "XcmV1MultiLocation";

    return [xcmVersion, isV3, xcmType];
}

[albertov19]

@jboetticher I did my function without noticing you provided one haha. Anyways I implemented it. Did not use isV3 because I prefer to check version in the codes themselves than in the helper.

I'll merge