Use CrudComponent for wiki templates list

What does this MR do and why?

• Migrate wiki templates list card to CrudComponent
• Remove some wiki CSS

Screenshots or screen recordings

Before	After

How to set up and validate locally

Project > wiki > actions (top right corner ellipsis button) > templates

Links

• ✂️ UX Paper Cuts 17.3 → Dark mode - Design Support (#452231 - closed)