Assets in pool with native can be used in `query_weight_to_asset_fee` (#6080)

A follow-up to https://github.com/paritytech/polkadot-sdk/pull/5599.
Assets in a pool with the native one are returned from
`query_acceptable_payment_assets`. Now those assets can be used in
`query_weight_to_asset_fee` to get the correct amount that needs to be
paid.

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Co-authored-by: command-bot <>