fix: invalid origin assignment for multi-exit case

[mortimr]

Description

This Pull Request addresses an invalid origin assignment issue that arose in multi-exit scenarios within the smart contract. The fix ensures that the origin is properly set in cases where multiple exit tickets are created in the same transactions.

Summary

• Code Changes: The modification takes into account the fact that multiple tickets are created when this event occured, properly linking the tickets to the integration contract that created them.