Fix dashboard panel menu not usable with error popover

What does this MR do and why?

Hides the panel error popover when a user clicks on the edit dropdown menu.

This resolves an issue where the dashboard panel dropdown would render behind the panel's error popover.

MR acceptance checklist

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

Screenshots or screen recordings

Before	After (menu closed)	After (menu open)

How to set up and validate locally

1. Follow these instructions to setup Product Analytics in GDK.
2. Onboard Product Analytics by setting up the feature at Project > Analytics > Analytics dashboards.
3. Create a custom dashboard with any visualization.
4. Stop the devkit docker images to create a network error.