pipecat/changelog/3571.changed.md

• ⚠️ Changed function call handling to use timeout-based completion instead of immediate callback execution.
  • Function calls that defer their results (e.g., UserImageRequestFrame) now use a timeout mechanism
  • The result_callback is invoked automatically when the deferred operation completes or after timeout
  • This change affects examples using UserImageRequestFrame - the result_callback should now be passed to the frame instead of being called immediately