Prevent Years in Event Titles

[escowles]

User story

As an administrator reviewing requests, sometimes people include years in the event name and sometimes they don't. This causes the requests for the same event to be split between two or more groups, making it difficult to review them together (or requiring work to rename events). I would like users to be warned before including years in the Event Name field.

Concrete example

• Some staff enter the event title as "Code4Lib" and some use "Code4Lib 2023".

Acceptance criteria

• When I review events, there are not duplicate events with/without the year included
• When I try to enter an event name including a year, I am warned and/or prevented from submitting the request

[maxkadel]

Lux seems to be overriding JS form validation on submission. @rladdusaw will work with @sdellis on this.