Issue Summary

When using Jira Events in Team Calendar with large Jira instance linked, the dialog takes long time to load and eventually times out.

It is caused by a bug reported in Jira Data Center: JSWSERVER-16764.

Steps to Reproduce

1. Establish a connection between Confluence DC and a large Jira DC via Application links.
   1. As outlined in the relevant Jira ticket, the issue manifests for a significant number of projects, search filters, and custom date fields (as these three data dimensions are queried).
2. Navigate to the Calendars section.
3. Open the Add Event dialog.
4. Choose one of the Jira event types: Jira Issue Dates, Jira Agile Sprints, or Jira Project Releases.

Expected Results

The dialog loads the form for the selected Jira Event Type, making it functional. Users can utilise it to create new events or edit existing ones.

Actual Results

The dialog is stuck in a loading state, ultimately resulting in a timeout that renders it unresponsive.

Workaround

Same as in the originating Jira issue -> Increase the timeout for the calendar connection as mentioned in the KB article JIRA Calendar Read Timed Out.