#22907 - Test: ArrayField(CharField(...)) can't be queried

When trying to make query with CharArrayModel.objects.filter(field__contains=['text']) I get:

```
ProgrammingError: operator does not exist: character varying[] @> text[]
LINE 1: ...el" WHERE "postgres_tests_chararraymodel"."field" @> ARRAY['...
                                                             ^
HINT:  No operator matches the given name and argument type(s). You might need to add explicit type casts.
```