Navigation LayoutBuilder UI has dead click zone

Problem/Motivation

- goto navigation's layout block builder. toggle 'narrow' sidebar mode. notice 'show content preview' can not be clicked unless at new letters 'view'

Steps to reproduce

also see: https://www.drupal.org/files/issues/2024-05-01/sidebar-noclick_zone.mov

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes

Release notes snippet