Python AddProductParams test failing because empty string upserted as null

[lucyzhang929]

Exception: KeyError: 'name'
 [60012] [2022-12-12T16:57:16.717Z] Stack:   File "/Users/lucyzhang/.nvm/versions/node/v14.18.2/lib/node_modules/azure-functions-core-tools/bin/workers/python/3.8/OSX/X64/azure_functions_worker/dispatcher.py", line 448, in _handle__invocation_request
 [60012] [2022-12-12T16:57:16.717Z]     call_result = await self._loop.run_in_executor(
 [60012] [2022-12-12T16:57:16.717Z]   File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/concurrent/futures/thread.py", line 57, in run
 [60012] [2022-12-12T16:57:16.717Z]     result = self.fn(*self.args, **self.kwargs)
 [60012] [2022-12-12T16:57:16.717Z]   File "/Users/lucyzhang/.nvm/versions/node/v14.18.2/lib/node_modules/azure-functions-core-tools/bin/workers/python/3.8/OSX/X64/azure_functions_worker/dispatcher.py", line 691, in _run_sync_func
 [60012] [2022-12-12T16:57:16.717Z]     return ExtensionManager.get_sync_invocation_wrapper(context,
 [60012] [2022-12-12T16:57:16.717Z]   File "/Users/lucyzhang/.nvm/versions/node/v14.18.2/lib/node_modules/azure-functions-core-tools/bin/workers/python/3.8/OSX/X64/azure_functions_worker/extension.py", line 215, in _raw_invocation_wrapper
 [60012] [2022-12-12T16:57:16.717Z]     result = function(**args)
 [60012] [2022-12-12T16:57:16.717Z]   File "/Users/lucyzhang/GitProjects/azure-functions-sql-extension/test/bin/Debug/net6/SqlExtensionSamples/Python/AddProductParams/__init__.py", line 8, in main
 [60012] [2022-12-12T16:57:16.717Z]     row = func.SqlRow(Product(req.params["productId"], req.params["name"], req.params["cost"]))

[lucyzhang929]

Related issue in Python worker Azure/azure-functions-python-worker#894