_maxAutomaticTokenAssociations default value should be null/undefined

[ochikov]

Description

_maxAutomaticTokenAssociations default value should be null/undefined.
The ContractUpdateTransaction returns NOT_SUPPORTED

Steps to reproduce

let response = await new FileCreateTransaction()
            .setKeys([operatorKey])
            .setContents(smartContractBytecode)
            .execute(env.client);

        let receipt = await response.getReceipt(env.client);

        expect(receipt.fileId).to.not.be.null;
        expect(receipt.fileId != null ? receipt.fileId.num > 0 : false).to.be
            .true;

        const file = receipt.fileId;

        response = await new ContractCreateTransaction()
            .setAdminKey(operatorKey)
            .setGas(100000)
            .setConstructorParameters(
                new ContractFunctionParameters().addString("Hello from Hedera.")
            )
            .setBytecodeFileId(file)
            .setContractMemo("[e2e::ContractCreateTransaction]")
            .execute(env.client);

        receipt = await response.getReceipt(env.client);

        expect(receipt.contractId).to.not.be.null;
        expect(receipt.contractId != null ? receipt.contractId.num > 0 : false)
            .to.be.true;

        let contract = receipt.contractId;

        let info = await new ContractInfoQuery()
            .setContractId(contract)
            .setQueryPayment(new Hbar(1))
            .execute(env.client);

        expect(info.contractId.toString()).to.be.equal(contract.toString());
        expect(info.accountId).to.be.not.null;
        expect(
            info.contractId != null ? info.contractId.toString() : ""
        ).to.be.equal(contract.toString());
        expect(info.adminKey).to.be.not.null;
        expect(
            info.adminKey != null ? info.adminKey.toString() : ""
        ).to.be.equal(operatorKey.toString());
        expect(info.storage.toInt()).to.be.equal(128);
        expect(info.contractMemo).to.be.equal(
            "[e2e::ContractCreateTransaction]"
        );

        await (
            await new ContractUpdateTransaction()
                .setContractId(contract)
                .setContractMemo("[e2e::ContractUpdateTransaction]")
                .execute(env.client)
        ).getReceipt(env.client);

        info = await new ContractInfoQuery()
            .setContractId(contract)
            .setQueryPayment(new Hbar(5))
            .execute(env.client);

        expect(info.contractId.toString()).to.be.equal(contract.toString());
        expect(info.accountId).to.be.not.null;
        expect(
            info.contractId != null ? info.contractId.toString() : ""
        ).to.be.equal(contract.toString());
        expect(info.adminKey).to.be.not.null;
        expect(
            info.adminKey != null ? info.adminKey.toString() : ""
        ).to.be.equal(operatorKey.toString());
        expect(info.storage.toInt()).to.be.equal(128);
        expect(info.contractMemo).to.be.equal(
            "[e2e::ContractUpdateTransaction]"
        );

        await (
            await new ContractDeleteTransaction()
                .setContractId(contract)
                .setTransferAccountId(env.client.operatorAccountId)
                .execute(env.client)
        ).getReceipt(env.client);

        await (
            await new FileDeleteTransaction()
                .setFileId(file)
                .execute(env.client)
        ).getReceipt(env.client);


### Additional context

_No response_

### Hedera network

other

### Version

v2.19.2

### Operating system

Other

[ochikov]

https://github.com/hashgraph/hedera-sdk-js/releases/tag/v2.20.0