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#### Describe the bug

I tried to use the function added in #4248 with TypeScript, but got the following error.

```
Property 'clear' does not exist on type 'AxiosInterceptorManager<AxiosRequestConfig<any>>
```

#### To Reproduce

Execution is possible, but type checking fails.

```ts
import axios from "axios";

axios.interceptors.request.clear()
```

#### Expected behavior

Successful type check

#### Environment
 - Axios 1.0.0
 - TypeScript 4.8.4

#### Additional context/Screenshots

test/typescript/axios.ts
xsrfHeaderName: 'X-XSRF-TOKEN',
  onUploadProgress: (progressEvent: AxiosProgressEvent) => {},
  onDownloadProgress: (progressEvent: AxiosProgressEvent) => {},
  maxContentLength: 2000,
  maxBodyLength: 2000,
  validateStatus: (status: number) => status >= 200 && status < 300,
  maxRedirects: 5,
  proxy: {
    host: '127.0.0.1',
    port: 9000
  },
  cancelToken: new axios.CancelToken((cancel: Canceler) => {})
};
const nullValidateStatusConfig: AxiosRequestConfig = {
  validateStatus: null
};
const undefinedValidateStatusConfig: AxiosRequestConfig = {
  validateStatus: undefined
};
const handleResponse = (response: AxiosResponse) => {
  console.log(response.data);
  console.log(response.status);
  console.log(response.statusText);
  console.log(response.headers);
  console.log(response.config);
};
const handleError = (error: AxiosError) => {
  if (error.response) {
    console.log(error.response.data);
    console.log(error.response.status);