Draft: Issue #3635676: Only open Admin Tools on hover at desktop width

Andrew Mortonrequested to merge
issue/admin_navigation-3635676:3635676-hovering-over-tools into 1.1.x

Generated with AI.

Below core's desktop breakpoint the sidebar is a drawer, and while a menu is open its header holds core's Back button. Pointing at the header opened Admin Tools, which closed the open menu and covered Back. Hover now opens and closes Admin Tools only at min-width 1024px, the check core's toolbar-popover.js makes; below it the chevron is the only trigger.

Closes #3635676

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