Menus: Remove unnecessary top margin for menu item type on Menus screen for...

Menus: Remove unnecessary top margin for menu item type on Menus screen for correct alignment with the dropdown icon.

Props punit5658.
Fixes #41521.
Built from https://develop.svn.wordpress.org/trunk@41925


git-svn-id: https://core.svn.wordpress.org/trunk@41759 1a063a9b-81f0-0310-95a4-ce76da25c4cd