Instrument close and reopen events on work items

What does this MR do and why?

Instruments the close/reopen internal events on work items with the new tracking service introduced here Instrument note related work item events (!214705 - merged)

References

Screenshots or screen recordings

Before	After

How to set up and validate locally

1. Run bin/rails runner scripts/internal_events/monitor.rb work_item_close work_item_reopen to monitor their usage

2. In your local gdk, close then reopen a work item

3. Verify that in your terminal the events were captured properly, and that the work item udpate metrics have incremented accordingly

MR acceptance checklist

Evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Related to #579672