feat: update suggestion menu component

[MDSAM05]

Summary

Fixes unexpected page scrolling when navigating the suggestion menu with keyboard arrow keys, especially when wrapping from the last item to the first (and vice versa).

Rationale

Arrow key navigation caused the page to scroll when wrapping between suggestions, leading to a poor editor experience.
This fix enables smooth circular navigation by keeping focus stable and preventing unwanted scrolling.

Changes

• Replaced scrollIntoView(true/false) with scrollIntoView({ block: "nearest" }) to prevent page jumps.
• Scrolled the active suggestion into view only when it overflows.
• Enabled smooth circular navigation without focus changes.

Impact

• Improves keyboard navigation UX by eliminating unexpected page scrolling.
• Keeps suggestion navigation smooth and predictable inside the editor.
• No breaking changes to existing functionality.

Testing

• Manually verified arrow key navigation without page scroll.
• Confirmed Enter key selection works as expected.

Screenshots/Video

Recording.2026-01-29.213625.mp4

Checklist

• Code follows the project's coding standards.
• Unit tests covering the new feature have been added.
• All existing tests pass.
• The documentation has been updated to reflect the new feature

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commit: 5faa903