Add ability to trigger "Filter Assign Scope" retroactively for existing issues

Issue Summary

For Readonly Insight Custom Field, "Filter Assign Scope (IQL)" only takes affect for newly created/updated issues as the filter only gets triggered upon a IssueCreated or IssueUpdated events.

As a result, as a Jira/Insight administrator it's difficult to automatically populate the "Readonly Insight Custom Field" values for existing issues until these issues are manually updated.

Steps to Reproduce

1. Create a few Jira issues first
2. Add a Readonly Insight Custom Field and add to the relevant screens
3. Add Filter Assign Scope (IQL)

Expected Results

Existing issues also changes the custom field value

Actual Results

Existing issues would not change the RO Insight custom field unless they're updated.

Workaround

Possible workaround bash script in community