MenuItem header text: Japanese characters are rendered lower than Latin characters when mixed

[Cheesecake2960]

Describe the bug

When Japanese characters (Hiragana, Katakana, Kanji) are used together with Latin characters in a MenuItem's Header, only the Japanese characters are rendered slightly lower. This creates a visual misalignment within the same string, affecting the consistency of the menu appearance.

To Reproduce

1. Create a MenuItem and set its Header to a string that includes both Japanese and Latin characters (e.g., "File（ファイル）", "編集 (Edit)").
2. Run the application on macOS.
3. Observe that only the Japanese characters appear slightly lower than the Latin characters in the same line.

Expected behavior

Japanese and Latin characters should be vertically aligned consistently when used together in the same Header.

Avalonia version

11.3.0

OS

macOS

Additional context

OS (no issue observed): Windows 11

(I can't speak English. I'm using translator.)

[kerams]

#18279