### 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_
index.d.ts
ny;
}
export interface CustomParamsSerializer {
  (params: Record<string, any>, options?: ParamsSerializerOptions): string;
}
export interface ParamsSerializerOptions extends SerializerOptions {
  encode?: ParamEncoder;
  serialize?: CustomParamsSerializer;
}
type MaxUploadRate = number;
type MaxDownloadRate = number;
type BrowserProgressEvent = any;
export interface AxiosProgressEvent {
  loaded: number;
  total?: number;
  progress?: number;
  bytes: number;
  rate?: number;
  estimated?: number;
  upload?: boolean;
  download?: boolean;
  event?: BrowserProgressEvent;
}
type Milliseconds = number;
type AxiosAdapterName = 'xhr' | 'http' | string;
type AxiosAdapterConfig = AxiosAdapter | AxiosAdapterName;
export interface AxiosRequestConfig<D = any> {
  url?: string;
  method?: Method | string;
  baseURL?: string;
  transformRequest?: AxiosRequestTransformer | AxiosRequestTransformer[];
  transformResponse?: AxiosResponseTransformer | AxiosResponseTransformer[];
  headers?: (RawAxiosRequestHeaders & MethodsHeaders) | AxiosHeaders;
  params?: any;
  paramsSerializer?: ParamsSerializerOptions | CustomParamsSerializer;
  data?: D;
  timeout?: Milliseconds;
  timeoutErrorMessage?: string;
  withCredentials?: boolean;
  adapter?: AxiosAdapterConfig | AxiosAdapterConfig[];
  auth?: AxiosBasicCredentials;
  responseType?: ResponseType;
  responseEncoding?: responseEncoding | string;
  xsrfCookieName?: string;
  xsrfHeaderName?: string;
  onUploadProgress?: (progressEvent: AxiosProgressEvent) => void;
  onDownloadProgress?: (progressEvent: AxiosProgressEvent) => void;
  maxContentLength?: number;
  validateStatus?: ((status: number) => boolean) | null;
  maxBodyLength?: number;
  maxRedirects?: number;
  maxRate?: number | [MaxUploadRate, MaxDownloadRate];
  beforeRedirect?: (options: Record<string, any>, responseDetails: { headers: Record<string, string> }) => void;
  socketPath?: string | null;
  transport?: any;
  httpAgent?: any;
  httpsAgent?: any;
  proxy?: AxiosProx