Fix e2e tests breaking because of modern javascript api usage

scm-ui/ui-webapp/src/search/search-box/SearchBox.tsx

@@ -77,8 +77,9 @@ const SearchBox = React.forwardRef<
         if (indexToInsert === -1) {
           indexToInsert = 0;
         }
-        // @ts-ignore toSpliced is part of modern browser api
-        return prev.toSpliced(indexToInsert, 0, ref);
+        const result = prev.slice();
+        result.splice(indexToInsert, 0, ref);
+        return result;
       }),
     []
   );