hotfix: disabled xcm on Astar temporally

[impelcrypto]

Pull Request Summary

• hotfix: disabled polkadot xcm temporally
• if you want to check on your end (https://github.com/AstarNetwork/astar-apps/pull/1313#issuecomment-2162687148)

Check list

• [ ] contains breaking changes
• [ ] adds new feature
• [ ] modifies existing feature (bug fix or improvements)
• [ ] relies on other tasks
• [ ] documentation changes
• [ ] tested on mobile devices

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit d7cd573):

https://astar-apps--pr1349-hotfix-disable-polka-1n65346u.web.app

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