### Describe the bug

Module http adapter is not beind exported, so I cannot force axios to use the http adapter instead of xhr

### To Reproduce

```js
const axios =  require('axios');
const url = 'https://catfact.ninja/fact';
axios.get(url, {
  adapter: require('axios/lib/adapters/http'),
}).then(console.log).catch(console.log);
```
or 
```js
const instance = axios.create({
  adapter: require('axios/lib/adapters/http'),
})
```
It works using axios@0.27.2




### Expected behavior

Use HTTP adapter

### Axios Version

1.1.3 and 1.2.0-alpha.1

### Adapter Version

HTTP

### Browser

_No response_

### Browser Version

_No response_

### Node.js Version

19.0.0

### OS

_No response_

### Additional Library Versions

_No response_

### Additional context/Screenshots

_No response_
lib/adapters/index.js
import utils from '../utils.js';
import httpAdapter from './http.js';
import xhrAdapter from './xhr.js';
const adapters = {
  http: httpAdapter,
  xhr: xhrAdapter
}
export default {
  getAdapter: (nameOrAdapter) => {
    if(utils.isString(nameOrAdapter)){
      const adapter = adapters[nameOrAdapter];
      if (!nameOrAdapter) {
        throw Error(
          utils.hasOwnProp(nameOrAdapter) ?
            `Adapter '${nameOrAdapter}' is not available in the build` :
            `Can not resolve adapter '${nameOrAdapter}'`
        );
      }
      return adapter
    }
    if (!utils.isFunction(nameOrAdapter)) {
      throw new TypeError('adapter is not a function');
    }
    return nameOrAdapter;
  },
  adapters
}