fix: propagate api_budget to parent streams in substream partition routers

When parent streams are created for substream partition routers, a new
ModelToComponentFactory instance is created without the global _api_budget
being propagated. This causes parent streams to ignore rate limiting
configuration, leading to 403 errors when API rate limits are exceeded.

This fix ensures that the _api_budget is propagated to the new factory
instance so parent streams respect the same rate limiting configuration
as child streams.

Fixes airbytehq/oncall#9874

Co-Authored-By: unknown <>

Author: devin-ai-integration[bot]

airbyte_cdk/sources/declarative/parsers/model_to_component_factory.py

@@ -3888,6 +3888,8 @@ def create_parent_stream_config_with_substream_wrapper(
                 ),
             ),
         )
+        
+        substream_factory._api_budget = self._api_budget
 
         return substream_factory.create_parent_stream_config(
             model=model, config=config, stream_name=stream_name, **kwargs