pool_withdraw_unbonded: TxDescriptor<{
    num_slashing_spans: number;
    pool_id: number;
}>

Call withdraw_unbonded for the pools account. This call can be made by any account.

This is useful if there are too many unlocking chunks to call unbond, and some can be cleared by withdrawing. In the case there are too many unlocking chunks, the user would probably see an error like NoMoreChunks emitted from the staking system when they attempt to unbond.