test(device config): validate against pydantic

tests/unit_tests/test_device_config_form_dialog.py

@@ -129,19 +129,13 @@ def test_update_cycle(update_dialog, qtbot):
         ({"readOnly": True, "description": "test"}, {"readOnly": True, "description": "test"}),
         (
             {"deviceConfig": {"param1": "'val1'"}},
-            {
-                "enabled": True,
-                "deviceClass": "TestDevice",
-                "deviceConfig": {"param1": "val1"},
-                "readoutPriority": "monitored",
-                "description": "",
-                "readOnly": False,
-                "softwareTrigger": False,
-                "onFailure": "retry",
-                "deviceTags": set(),
-                "userParameter": {},
-                "name": "test_device",
-            },
+            DeviceConfigModel(
+                enabled=True,
+                deviceClass="TestDevice",
+                deviceConfig={"param1": "val1"},
+                readoutPriority="monitored",
+                name="test_device",
+            ).model_dump(),
         ),
         ({"deviceConfig": {}}, {}),
     ],