### 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_
test/module/typings/esm/index.ts
axios.get('/user')
    .catch((error: any) => 'foo')
    .then((value: any) => {});
axios.get('/user')
    .catch((error: any) => Promise.resolve('foo'))
    .then((value: any) => {});
const source: CancelTokenSource = axios.CancelToken.source();
axios.get('/user', {
  cancelToken: source.token
}).catch((thrown: AxiosError | Cancel) => {
  if (axios.isCancel(thrown)) {
    const cancel: Cancel = thrown;
    console.log(cancel.message);
  }
  
  if (isCancel(thrown)) {
    const cancel: Cancel = thrown;
    console.log(cancel.message);
  }
});
source.cancel('Operation has been canceled.');
axios.get('/user')
    .catch((error: AxiosError) => {
      if (axios.isAxiosError(error)) {
        const axiosError: AxiosError = error;
      }
      
      if (isAxiosError(error)) {
        const axiosError: AxiosError = error;
      }