[Feature]: Transformation for AWS.NodeHttpClient

### Self-service

- [ ] I'd be willing to implement this feature

### Problem

```js
import AWS from "aws-sdk";

const handler = new AWS.NodeHttpClient();
```

### Solution

```js
import { NodeHttpHandler } from "@smithy/node-http-handler";

const handler = new NodeHttpHandler();
```

### Alternatives

N/A

### Additional context

_No response_

No source file or test is named in the issue, so first locate the existing AWS SDK transformation entry points and their test fixtures. Use the NodeHttpClient example and the requested NodeHttpHandler import as the expected input and output, then add or update a focused fixture and run the relevant transformation tests to verify the result.

Written by the indexing model from the issue text.