Fix link to Users search in the "Other searches" bar

Regression in b6fdd8c408

wagtail/users/tests/test_admin_views.py

@@ -226,6 +226,12 @@ class TestUserIndexView(AdminTemplateTestUtils, WagtailTestUtils, TestCase):
         response = self.get({"q": "Hello"})
         self.assertEqual(response.status_code, 200)
         self.assertEqual(response.context["query_string"], "Hello")
+        soup = self.get_soup(response.content)
+        filter_options = soup.select(".filter-options a")
+        self.assertIn(
+            ("Users", reverse("wagtailusers_users:index") + "?q=Hello"),
+            [(a.text.strip(), a.get("href")) for a in filter_options],
+        )
 
     def test_search_query_one_field(self):
         response = self.get({"q": "first name"})

wagtail/users/views/users.py

@@ -11,6 +11,7 @@ from django.core.exceptions import FieldDoesNotExist, PermissionDenied
 from django.db.models import Q
 from django.forms import CheckboxSelectMultiple
 from django.template import RequestContext
+from django.urls import reverse
 from django.utils.functional import cached_property
 from django.utils.translation import gettext as _
 from django.utils.translation import gettext_lazy
@@ -429,7 +430,7 @@ class UserViewSet(ModelViewSet):
     def get_search_area(self):
         return self.search_area_class(
             gettext_lazy("Users"),
-            self.get_url_name("index"),
+            reverse(self.get_url_name("index")),
             name="users",
             icon_name="user",
             order=600,