#8026447 Stats: Add static highlight card settings tooltip

Resolves #77548

Proposed Changes

• Add a highlight card settings tooltip that is temporarily determined displaying by sessionStorage.

Testing Instructions

• Spin this change with the live branch link.
• Navigate to Stats > Traffic page.
• Ensure the highlights section settings tooltip shows in line with the design.
• Click the Got it or settings popover toggle button.
• Ensure the settings tooltip disappears and do not show after refreshing the page.

Pre-merge Checklist

• Has the general commit checklist been followed? (PCYsg-hS-p2)
• Have you written new tests for your changes?
• Have you tested the feature in Simple (P9HQHe-k8-p2), Atomic (P9HQHe-jW-p2), and self-hosted Jetpack sites (PCYsg-g6b-p2)?
• Have you checked for TypeScript, React or other console errors?
• Have you used memoizing on expensive computations? More info in Memoizing with create-selector and Using memoizing selectors and Our Approach to Data
• Have we added the “[Status] String Freeze” label as soon as any new strings were ready for translation (p4TIVU-5Jq-p2)?
• For changes affecting Jetpack: Have we added the “[Status] Needs Privacy Updates” label if this pull request changes what data or activity we track or use (p4TIVU-ajp-p2)?