fix: Set Paginator.nextParams to an empty object after first request

This stops the duplication of query parameters in our request URL, as Mastodon already gives us the correct parameters in the `Link` header. In some cases, a mixture of parameters from `params` and the `Link` URL could cause the iterator to get caught in an infinite loop. Fixes #698.

src/paginator.ts

@@ -37,6 +37,7 @@ export class Paginator<Params, Result>
       typeof response.headers?.link === 'string'
         ? this.pluckNext(response.headers.link)
         : undefined;
+    this.nextParams = {} as Params;
 
     return {
       done: false,