Tests : add tests for dataset settings (#13747)

### What problem does this PR solve?

add tests

### Type of change

- [x] Other (please describe): test

Co-authored-by: Liu An <asiro@qq.com>

test/testcases/test_http_api/test_dataset_management/test_update_dataset.py

@@ -173,6 +173,21 @@ class TestDatasetUpdate:
         assert res["code"] == 102, res
         assert res["message"] == f"Dataset name '{name}' already exists", res
 
+    @pytest.mark.p2
+    def test_language_and_connectors_supported(self, HttpApiAuth, add_dataset_func):
+        dataset_id = add_dataset_func
+        payload = {
+            "name": "language_connectors_supported",
+            "description": "",
+            "chunk_method": "naive",
+            "language": "English",
+            "connectors": [],
+        }
+        res = update_dataset(HttpApiAuth, dataset_id, payload)
+        assert res["code"] == 0, res
+        assert res["data"]["language"] == "English", res
+        assert res["data"]["connectors"] == [], res
+
     @pytest.mark.p2
     def test_avatar(self, HttpApiAuth, add_dataset_func, tmp_path):
         dataset_id = add_dataset_func