fix test_getitem_scalar test

Author: chelsea-lin

db_dtypes/json.py

@@ -40,7 +40,7 @@ def na_value(self) -> pd.NA:
 
     @property
     def type(self) -> type[str]:
-        return str
+        return dict
 
     @property
     def _is_numeric(self) -> bool:

tests/compliance/json/test_json_compliance.py

@@ -392,13 +392,3 @@ def test_setitem_2d_values(self, data):
     @pytest.mark.parametrize("engine", ["c", "python"])
     def test_EA_types(self, engine, data, request):
         super().test_EA_types(engine, data, request)
-
-    def test_getitem_scalar(self, data):
-        result = data[0]
-        # While JSONDtype internally stores data as pyarrow strings
-        # (equivalent to data.dtype.type), it is deliberately designed to return a
-        # dictionary as the result.
-        assert isinstance(result, dict)
-
-        result = pd.Series(data)[0]
-        assert isinstance(result, dict)