fix: checkbox filter django 4.x

src/unfold/contrib/filters/admin/choice_filters.py

@@ -4,10 +4,11 @@
 from django.contrib import admin
 from django.contrib.admin.views.main import ChangeList
 from django.core.validators import EMPTY_VALUES
-from django.db.models import QuerySet
+from django.db.models import Model, QuerySet
 from django.http import HttpRequest
 from django.utils.translation import gettext_lazy as _
 
+from unfold.admin import ModelAdmin
 from unfold.contrib.filters.admin.mixins import (
     ChoicesMixin,
     MultiValueMixin,
@@ -56,6 +57,17 @@ class CheckboxFilter(RadioFilter):
     form_class = CheckboxForm
     all_option = None
 
+    # TODO: remove once django 4.x is not supported
+    def __init__(
+        self,
+        request: HttpRequest,
+        params: dict[str, Any],
+        model: type[Model],
+        model_admin: ModelAdmin,
+    ) -> None:
+        self.request = request
+        super().__init__(request, params, model, model_admin)
+
     def value(self) -> list[Any]:
         return self.request.GET.getlist(self.parameter_name)