message: Allow unset transferAmount in test code
diff: @@ -108,7 +108,7 @@ async function instantiateContract(
  pen: Pen,
  codeId: number,
  beneficiaryAddress: string,
  - transferAmount: readonly Coin[],
  + transferAmount?: readonly Coin[],
  ): Promise<PostTxsResponse> {
  const memo = "Create an escrow instance";
  const theMsg: MsgInstantiateContract = {
  @@ -120,7 +120,7 @@ async function instantiateContract(
  verifier: faucetAddress,
  beneficiary: beneficiaryAddress,
  },
  - init_funds: transferAmount,
  + init_funds: transferAmount || [],
  },
  };
  const fee: StdFee = {
  