fix: Navigation buttons jumping.

[apachezy]

Pull request type

Please check the type of change your PR introduces:

• Update
• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes

What is the current behavior?

• When clicking AutoSuggestBoxSymbolButton or PART_ToggleButton, the navigation buttons have a noticeable beating.
• The AutoSuggestBoxSymbolButton icon failed to center.

default.mp4

What is the new behavior?

• After the fix, the beating of the navigation buttons disappeared.
• After the fix, the icon can be centered and can follow the animation.

_20251009_233548.mp4

Other information

• Addresses feedback from #1515