fix: handle IncludeExecutionData query parameter as bool

Author: bchampp

src/aws_durable_execution_sdk_python_testing/web/handlers.py

@@ -459,11 +459,13 @@ def handle(self, parsed_route: Route, request: HTTPRequest) -> HTTPResponse:
 
             max_results: str | None = self._parse_query_param(request, "maxResults")
             next_token: str | None = self._parse_query_param(request, "nextToken")
+            include_execution_data_str: str | None = self._parse_query_param(request, "IncludeExecutionData")
+            include_execution_data: bool = include_execution_data_str == "true" if include_execution_data_str else False
 
             history_response: GetDurableExecutionHistoryResponse = (
                 self.executor.get_execution_history(
                     execution_arn,
-                    include_execution_data=False,
+                    include_execution_data=include_execution_data,
                     reverse_order=False,
                     marker=next_token,
                     max_items=int(max_results) if max_results else None,