missing known keys

[xlc]

Not all the known keys are configured here

https://github.com/polkadot-js/api/blob/6fcd984205e302a60b3242a568bf791c452be869/packages/types/src/metadata/decorate/storage/substrate.ts#L20-L39

For a hopefully completed list, see this issue: https://github.com/paritytech/polkadot-sdk/issues/2126