MetaSessionDeadlineRejected had no UI consumer: the tray only does
metadata-driven localisation for MetaSessionWarning events; all other
SystemEvents display userMessage directly (tray_events.go). Leaving
userMessage empty made the rejection invisible to the user.
Restore the English userMessage so the generic event path shows
something, and remove the unused MetaSessionDeadlineRejected constant.
https://claude.ai/code/session_01Y3bQoNgcVjTD4zDTvv7a8u