refactor(logging): standardize status code handling and enhance logging in webhook and cron handlers

steps/vmh/webhook/beteiligte_update_api_step.py

@@ -60,7 +60,7 @@ async def handler(request: ApiRequest, ctx: FlowContext[Any]) -> ApiResponse:
                        f"{len(entity_ids)} events emitted")
 
         return ApiResponse(
-            status_code=200,
+            status=200,
             body={
                 'status': 'received',
                 'action': 'update',
@@ -74,7 +74,7 @@ async def handler(request: ApiRequest, ctx: FlowContext[Any]) -> ApiResponse:
         ctx.logger.error(f"Error: {e}")
         ctx.logger.error("=" * 80)
         return ApiResponse(
-            status_code=500,
+            status=500,
             body={
                 'error': 'Internal server error',
                 'details': str(e)