fix(crisp): build mock e3 harness artifact

Author: hmzakhalid

examples/CRISP/packages/crisp-contracts/hardhat.config.ts

@@ -149,6 +149,7 @@ const config: HardhatUserConfig = {
       '@interfold/contracts/contracts/test/MockDkgFoldAttestationVerifier.sol',
       '@interfold/contracts/contracts/test/MockPkVerifier.sol',
       '@interfold/contracts/contracts/test/MockE3Program.sol',
+      '@interfold/contracts/contracts/test/MockE3ProgramHarness.sol',
       '@interfold/contracts/contracts/test/MockSlashingVerifier.sol',
       '@interfold/contracts/contracts/test/MockStableToken.sol',
       '@interfold/contracts/contracts/verifiers/bfv/BfvDecryptionVerifier.sol',