fix: add support for iter_bytes when iter_content is unavailable in simulation save service

src/aeros_simulation/simulation_save_service.py

@@ -40,8 +40,12 @@ async def execute_simulation(
         )
         response.raise_for_status()
         with open(tmpfile, "wb") as f:
-            for chunk in response.iter_content(chunk_size=8192):
-                f.write(chunk)
+            if hasattr(response, "iter_content"):
+                for chunk in response.iter_content(chunk_size=8192):
+                    f.write(chunk)
+            else:
+                for chunk in response.iter_bytes(chunk_size=8192):
+                    f.write(chunk)
 
         if not is_saved:
             # If not saving to DB, just return parsed JSON