docs: _SQLiteJSONComparison docstring lists contains/contained_in it does not have #401

_SQLiteJSONComparison (src/strawchemy/schema/filters/inputs.py:445-465) declares only has_key, has_key_all and has_key_any, but its docstring's Attributes section, copied from _JSONComparison, also lists contains and contained_in. Its summary also mentions filtering "based on containment".

JSONFilter._sqlite_json (src/strawchemy/schema/filters/base.py) has no containment branch, and the integration tests skip contains/containedIn on SQLite (tests/integration/data_types/test_json.py).

Also, make_sqlite_json_comparison_input (inputs.py:476-479) publishes it under the same GraphQL name JSONComparison and the same "json" description as the full input. The schema doesn't tell SQLite users that containment is unsupported.

Fix: remove the two attributes and the containment wording from the docstring. Optionally, give the SQLite input a description that says containment is unsupported.