Prevent closing drawer when parent updates

What does this MR do and why?

When viewing a work item, a GraphQL subscription update can cause the drawer that shows selected child items to close.

This change removes the code that would close the drawer in this case, as it is not an intended experience.

References

Screenshots or screen recordings

Before	After
Screen_Recording_2025-07-17_at_14.35.56	Screen_Recording_2025-07-17_at_14.36.38

How to set up and validate locally

1. Visit an epic in two tabs/windows.
2. Add a child issue/epic and click it to view in the drawer.
3. In one tab/window, make a change to the epic (e.g. change confidentiality)
4. This will update the other tab/window using a subscription and should NOT close the drawer.

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.