Fix quick links styling with autodevops off

What does this MR do and why?

• Fix quick links styling with autodevops off
• Unifies styles in dark mode

Screenshots or screen recordings

Before	After

How to set up and validate locally

• Enable :project_overview_reorg
• Turn autodevops off in project settings
• Look at project overview page > new sidebar

✂️ UX Paper Cuts 16.7 → Project page (#430244 - closed)

💬 Feedback: Project overview page (#434684 - closed)