### Is your feature request related to a problem? Please describe.

I am creating a library that will mostly be used in electron projects. The library needs to perform http request to a localhost server that uses a self signed certificate, so I need to use https.Agent. The problem is, that axios uses the xhr adapter instead of the http adapter. When i try to import the correct adapter from `axios/lib/adapters/http` I get the error `ERR_PACKAGE_PATH_NOT_EXPORTED`. 

### Describe the solution you'd like

I need a way to tell axios to always use the http adapter. The easiest way to do this is by exposing `axios/lib/adapters/http`.

### Describe alternatives you've considered

_No response_

### Additional context/Screenshots

_No response_
lib/defaults/index.js
if (!hasJSONContentType) {
        return data;
      }
      return hasJSONContentType ? JSON.stringify(formDataToJSON(data)) : data;
    }
    if (utils.isArrayBuffer(data) ||
      utils.isBuffer(data) ||
      utils.isStream(data) ||
      utils.isFile(data) ||
      utils.isBlob(data)
    ) {
      return data;
    }
    if (utils.isArrayBufferView(data)) {
      return data.buffer;
    }
    if (utils.isURLSearchParams(data)) {
      headers.setContentType('application/x-www-form-urlencoded;charset=utf-8', false);
      return data.toString();
    }
    let isFileList;
    if (isObjectPayload) {
      if (contentType.indexOf('application/x-www-form-urlencoded') > -1) {
        return toURLEncodedForm(data, this.formSerializer).toString();
      }
      if ((isFileList = utils.isFileList(data)) || contentType.indexOf('multipart/form-data') > -1) {
        const _FormData = this.env && this.env.FormData;
        return toFormData(
          isFileList ? {'files[]': data} : data,
          _FormData && new _FormData(),