Add keyboard scrolling to panels

What does this MR do and why?

Add keyboard scrolling from panel headers

Allow Arrow, Page, Home, and End keys to scroll panel content when a panel header has focus, and scroll the relevant panel when nothing is focused. Works for the static, dynamic, and AI panels.

• Scrolls static panel by default
• When dynamic panel is open on page load, it will scroll this panel by default
• Clicking on a panel header will allow to scroll it's panel content using the keyboard

References

• !224954 (merged)
• #580678

Screenshots or screen recordings

Before	After

How to set up and validate locally

1. Open a page with 3 panels, e.g. a work item (https://gdk.test:3000/flightjs/Flight/-/work_items?sort=title_desc&state=opened&first_page_size=20&show=eyJpaWQiOiI0MSIsImZ1bGxfcGF0aCI6ImZsaWdodGpzL0ZsaWdodCIsImlkIjo2MTF9)
2. Try to scroll using the keyboard:
   1. With nothing selected (refresh page, try to scroll with arrows, page down)
   2. When clicking into each panel header

MR acceptance checklist

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