Navigation scrolling items link area not full width

[kevin147147]

If you have many apps. Then you get a scrolling list. Before nc14 the click targets were bigger as they filled the whole width of the dropdown menu. I already provided a fix for it. #11906

**Nextcloud version: 14+

[nextcloud-bot]

GitMate.io thinks possibly related issues are #10019 (Make skip navigation links translatable), #11194 (Deadlock in ('UPDATE `oc_file...', Array, Array) when partition full), https://github.com/nextcloud/server/issues/11665 (PDFviewer in IE11 does not use full width), #6234 (Shared by link: Items missing), and #10004 (Add skip navigation / skip to content links for accessibility).