Add ability to search for specific event identifiers

[tylerbarna]

Description

Currently, if a user searches something like "230924" the results for IGWN event 230924an don't load. We can add a conditional check for event identifiers that submits a wildcard search that will allow the relevant results to be returned.

(Based on Helpdesk request)

Acceptance criteria

• Have search function detect if an event identifier is submitted as a search
• Add wildcards to search queries that contain event identifiers in the backend
• Wildcard searches can be slower and more costly than standard multi-match searches, so only have the wildcard search trigger in the specific case of an event identifier. If the search is not an event identifier, the current search strategy should occur

[tylerbarna]

Issue superseded by #2288