Add stub for get_select2_language from django.contrib.admin.widgets (#2612)

Author: michalpokusa

Diff for: django-stubs/contrib/admin/widgets.pyi

@@ -133,6 +133,8 @@ class AdminUUIDInputWidget(forms.TextInput):
 
 SELECT2_TRANSLATIONS: dict[str, str]
 
+def get_select2_language() -> str | None: ...
+
 class AutocompleteMixin:
     url_name: str
     field: Any

Diff for: scripts/stubtest/allowlist_todo.txt

@@ -50,7 +50,6 @@ django.contrib.admin.views.autocomplete.AutocompleteJsonView.serialize_result
 django.contrib.admin.views.main.ChangeList.search_form_class
 django.contrib.admin.widgets.AutocompleteMixin.media
 django.contrib.admin.widgets.FilteredSelectMultiple.Media
-django.contrib.admin.widgets.get_select2_language
 django.contrib.admin.widgets.BaseAdminTimeWidget.Media
 django.contrib.admin.widgets.BaseAdminDateWidget.Media
 django.contrib.admindocs.utils.non_capturing_group_matcher