🐛 Fix deletion warning logic for preserved events

Update the `due_for_deletion_warning?` and `due_for_final_deletion_warning?` methods to ensure preserved events do not trigger deletion warnings. Adjust related scopes to exclude preserved events from deletion warnings. 🔧 Add error handling for ActiveStorage representations Implement error handling for S3 service errors in ActiveStorage representations to improve reliability and user experience. 🔥 Remove upgrade option from pricing details Eliminate the upgrade option from Event to Unlimited in the FAQ section.