duo-ui blocking 'z' and 'y' keystrokes in GitLab Duo Agentic chat interface

Since duo-ui version 10.15.1, both classic and agentic Duo chat interfaces are preventing users from typing the letters 'y' and 'z' in the prompt input field. Root Cause Introduced in duo-ui 10.15.1 through MR: !227 (merged)