### 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

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### Additional context/Screenshots

_No response_
test/module/typings/esm/index.ts
.catch(handleError);
axios.post<Partial<UserCreationDef>, string>('/user', { name: 'foo' }, { headers: { 'X-FOO': 'bar' } })
    .then(handleStringResponse)
    .catch(handleError);
axios.put<Partial<UserCreationDef>, string>('/user', { name: 'foo' })
    .then(handleStringResponse)
    .catch(handleError);
axios.patch<Partial<UserCreationDef>, string>('/user', { name: 'foo' })
    .then(handleStringResponse)
    .catch(handleError);
axios.request<User, string>({
  method: 'get',
  url: '/user?id=12345'
})
    .then(handleStringResponse)
    .catch(handleError);
const instance1: AxiosInstance = axios.create();
const instance2: AxiosInstance = axios.create(config);
instance1(config)
    .then(handleResponse)
    .catch(handleError);
instance1.request(config)
    .then(handleResponse)
    .catch(handleError);
instance1.get('/user?id=12345')
    .then(handleResponse)
    .catch(handleError);
instance1.options('/user')
    .then(handleResponse)
    .catch(handleError);