test: type-hint bulk-edit-objects permission test signatures

Matches the project convention of annotating fixture params and test
signatures (rest_api_client: APIClient, -> None).

src/documents/tests/test_permission_filtering_security.py

@@ -655,7 +655,10 @@ class TestMatchingRespectsObjectPermissions:
 
 @pytest.mark.django_db
 class TestBulkEditObjectsApplyToAllPermissionBoundary:
-    def test_apply_to_all_tags_excludes_unpermitted_tag(self, rest_api_client):
+    def test_apply_to_all_tags_excludes_unpermitted_tag(
+        self,
+        rest_api_client: APIClient,
+    ) -> None:
         owner = User.objects.create_user(username="tags_owner")
         requester = User.objects.create_user(username="tags_requester")
         # grant the global change_tag permission so the object-level
@@ -696,8 +699,8 @@ class TestBulkEditObjectsApplyToAllPermissionBoundary:
 class TestBulkEditObjectsTagDescendantPartialPermission:
     def test_apply_to_all_descendant_expansion_respects_per_object_permissions(
         self,
-        rest_api_client,
-    ):
+        rest_api_client: APIClient,
+    ) -> None:
         """
         GIVEN:
             - A tag hierarchy (parent -> permitted_child, unpermitted_child)