### Is there an existing issue for this?

- [X] I have searched the existing issues and read the documentation

### Question

After configuring it  withEnv("DYNAMODB_WRITE_ERROR_PROBABILITY", "1.0") — it is expected to throw dynamo throuput exception , but throwing 500 error - `(Service: DynamoDb, Status Code: 500, Request ID: null, Extended Request ID: null)","operationType":"PutItem","kinesisRecordMetaData":{"recordInsertionDate":"01-01-2021"}}, Response - PutObjectResponse(ETag="5435b0664a1337227d380fbd83ebcc89")

### Anything else?

_No response_
existing_items.append(ItemFinder.find_existing_item(inner_item))
        
        result = self.forward_request(context)
        
        streams_enabled_cache = {}
        records = self.prepare_transact_write_item_records(
            transact_items=transact_write_items_input["TransactItems"],
            existing_items=existing_items,
        )
        event_sources_or_streams_enabled = False
        for record in records:
            event_sources_or_streams_enabled = (
                event_sources_or_streams_enabled
                or has_event_sources_or_streams_enabled(
                    record["eventSourceARN"], streams_enabled_cache
                )
            )
        if event_sources_or_streams_enabled:
            self.forward_stream_records(records)
        return result
    @handler("TransactGetItems", expand=False)
    def transact_get_items(
        self,
        context: RequestContext,
        transact_items: TransactGetItemList,
        return_consumed_capacity: ReturnConsumedCapacity = None,
    ) -> TransactGetItemsOutput:
        return self.forward_request(context)
    @handler("ExecuteTransaction", expand=False)
    def execute_transaction(