Switchboard on-demand randomnessClose instruction not supported/implemented

The @switchboard-xyz/on-demand library's [closeIx()](https://github.com/switchboard-xyz/on-demand/blob/31cd08dba23065b2056463ee44155929e6edd778/src/accounts/randomness.ts#L419C1-L445C4) method calls randomnessClose instruction but that doesn't exist in the deployed program. Couldn't find instruction even at [IDL](https://solscan.io/account/SBondMDrcV3K4kxZR1HNVT7osZxAHVHgYXL5Ze1oMUv#programIdl)