### 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
yConfig | false;
  cancelToken?: CancelToken;
  decompress?: boolean;
  transitional?: TransitionalOptions;
  signal?: GenericAbortSignal;
  insecureHTTPParser?: boolean;
  env?: {
    FormData?: new (...args: any[]) => object;
  };
  formSerializer?: FormSerializerOptions;
  family?: 4 | 6 | undefined;
  lookup?: ((hostname: string, options: object, cb: (err: Error | null, address: string, family: number) => void) => void) |
      ((hostname: string, options: object) => Promise<[address: string, family: number] | string>);
}
export type RawAxiosRequestConfig<D = any> = AxiosRequestConfig<D>;
export interface InternalAxiosRequestConfig<D = any> extends AxiosRequestConfig<D> {
  headers: AxiosRequestHeaders;
}
export interface HeadersDefaults {
  common: RawAxiosRequestHeaders;
  delete: RawAxiosRequestHeaders;
  get: RawAxiosRequestHeaders;
  head: RawAxiosRequestHeaders;
  post: RawAxiosRequestHeaders;
  put: RawAxiosRequestHeaders;
  patch: RawAxiosRequestHeaders;
  options?: RawAxiosRequestHeaders;
  purge?: RawAxiosRequestHeaders;
  link?: RawAxiosRequestHeaders;
  unlink?: RawAxiosRequestHeaders;
}
export interface AxiosDefaults<D = any> extends Omit<AxiosRequestConfig<D>, 'headers'> {
  headers: HeadersDefaults;
}
export interface CreateAxiosDefaults<D = any> extends Omit<AxiosRequestConfig<D>, 'headers'> {
  headers?: RawAxiosRequestHeaders | AxiosHeaders | Partial<HeadersDefaults>;
}
export interface AxiosResponse<T = any, D = any> {
  data: T;
  status: number;
  statusText: string;
  headers: RawAxiosResponseHeaders | AxiosResponseHeaders;
  config: InternalAxiosRequestConfig<D>;
  request?: any;
}
export class AxiosError<T = unknown, D = any> extends Error {
  constructor(
      message?: string,
      code?: string,
      config?: InternalAxiosRequestConfig<D>,
      request?: any,
      response?: AxiosResponse<T, D>
  );
  config?: InternalAxiosRequestConfig<D>;
  code?: string;
  request?: any;
  response?: AxiosResponse<T, D>;
  isAxiosError: boolean