perf(pipeline): currently not allowed to change is_default field

Author: RockChinQ

pkg/api/http/service/pipeline.py

@@ -86,6 +86,9 @@ async def update_pipeline(self, pipeline_uuid: str, pipeline_data: dict) -> None
             del pipeline_data['for_version']
         if 'stages' in pipeline_data:
             del pipeline_data['stages']
+        if 'is_default' in pipeline_data:
+            del pipeline_data['is_default']
+
         await self.ap.persistence_mgr.execute_async(
             sqlalchemy.update(persistence_pipeline.LegacyPipeline).where(persistence_pipeline.LegacyPipeline.uuid == pipeline_uuid).values(**pipeline_data)
         )