[BUG] (type-safe-api) array responses produce broken code

[cogwirrel]

Describe the bug

Returning an array as the top level response from an operation causes code to be generated which does not compile.

Expected Behavior

Working code.

Current Behavior

Broken code eg:

    const marshal = (statusCode: number, responseBody: any): string => {
        let marshalledBody = responseBody;
        switch(statusCode) {
            case 200:
                marshalledBody = JSON.stringify(Array<AssetResponse>ToJSON(marshalledBody));
                break;

Reproduction Steps

Use spec from #863

Possible Solution

No response

Additional Information/Context

No response

PDK version used

0.23.70

What languages are you seeing this issue on?

Typescript, Java, Python

Environment details (OS name and version, etc.)

osx