Add join to JSONObject

Author: sobolevn

django-stubs/db/models/functions/json.pyi

@@ -1,3 +1,4 @@
+from collections.abc import Sequence
 from typing import Any, ClassVar
 
 from django.db.backends.base.base import BaseDatabaseWrapper
@@ -27,3 +28,4 @@ class JSONObject(Func):
         self, compiler: SQLCompiler, connection: BaseDatabaseWrapper, **extra_context: Any
     ) -> _AsSqlType: ...
     def as_oracle(self, compiler: SQLCompiler, connection: BaseDatabaseWrapper, **extra_context: Any) -> _AsSqlType: ...
+    def join(self, args: Sequence[Any]) -> str: ...

scripts/stubtest/allowlist_todo_django52.txt

@@ -93,5 +93,3 @@ django.db.models.expressions.OutputFieldIsNoneError
 django.db.models.fields.Field.has_db_default
 django.db.models.fields.related.ForeignKey.cast_db_type
 django.db.models.fields.tuple_lookups
-django.db.models.functions.JSONObject.join
-django.db.models.functions.json.JSONObject.join