Prefer nextPage over totalPages as later is omitted in some contexts

app/assets/javascripts/lib/utils/select2_utils.js

 import axios from './axios_utils';
-import { normalizeHeaders } from './common_utils';
+import { normalizeHeaders, parseIntPagination } from './common_utils';
 
 // This is used in the select2 config to replace jQuery.ajax with axios
 export const select2AxiosTransport = (params) => {
@@ -9,9 +9,8 @@ export const select2AxiosTransport = (params) => {
     .then((res) => {
       const results = res.data || [];
       const headers = normalizeHeaders(res.headers);
-      const currentPage = parseInt(headers['X-PAGE'], 10) || 0;
-      const totalPages = parseInt(headers['X-TOTAL-PAGES'], 10) || 0;
-      const more = currentPage < totalPages;
+      const pagination = parseIntPagination(headers);
+      const more = pagination.nextPage > pagination.page;
 
       params.success({
         results,