ui: set page number to 1 when updating search string

packages/ui-default/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@hydrooj/ui-default",
-  "version": "4.37.3",
+  "version": "4.37.4",
   "author": "undefined <i@undefined.moe>",
   "license": "AGPL-3.0",
   "main": "hydro.js",

packages/ui-default/pages/problem_main.page.js

@@ -56,6 +56,7 @@ async function updateSelection(sendRequest = true) {
     const url = new URL(window.location.href);
     if (!q) url.searchParams.delete('q');
     else url.searchParams.set('q', q);
+    url.searchParams.delete('page');
     pjax.request({ url: url.toString() });
     $('[name="q"]').val(q);
   }