ExtrinsicWeightReclaimed: StorageDescriptor<
    [],
    { proof_size: bigint; ref_time: bigint },
    false,
    never,
>

The weight reclaimed for the extrinsic.

This information is available until the end of the extrinsic execution. More precisely this information is removed in note_applied_extrinsic.

Logic doing some post dispatch weight reduction must update this storage to avoid duplicate reduction.