### Describe the bug

libraries like axios-mock-adapter define an adapter but in same cases need to access to original adapter.

It was working correctly before as the adapter was always a function.
Now it can be an array of string

Only the method getAdapter() in adapters/adapter.js can allow access to original adapters (xhr and http)
But this method is not exported a all at top level.

Can you export it ? 


### To Reproduce

Try to use axios-mock-adapter plugin with onNoMatch option

### Code snippet

_No response_

### Expected behavior

_No response_

### Axios Version

1.2.1 and upper

### Adapter Version

_No response_

### Browser

_No response_

### Browser Version

_No response_

### Node.js Version

_No response_

### OS

_No response_

### Additional Library Versions

_No response_

### Additional context/Screenshots

_No response_
lib/axios.js
utils.extend(instance, Axios.prototype, context, {allOwnKeys: true});
  
  utils.extend(instance, context, null, {allOwnKeys: true});
  
  instance.create = function create(instanceConfig) {
    return createInstance(mergeConfig(defaultConfig, instanceConfig));
  };
  return instance;
}
const axios = createInstance(defaults);
axios.Axios = Axios;
axios.CanceledError = CanceledError;
axios.CancelToken = CancelToken;
axios.isCancel = isCancel;
axios.VERSION = VERSION;
axios.toFormData = toFormData;
axios.AxiosError = AxiosError;
axios.Cancel = axios.CanceledError;
axios.all = function all(promises) {
  return Promise.all(promises);
};
axios.spread = spread;
axios.isAxiosError = isAxiosError;
axios.mergeConfig = mergeConfig;
axios.AxiosHeaders = AxiosHeaders;
axios.formToJSON = thing => formDataToJSON(utils.isHTMLForm(thing) ? new FormData(thing) : thing);
axios.HttpStatusCode = HttpStatusCode;
axios.default = axios;
export default axios