Distinguish between Latin characters and CJK characters in vim::NextWordStart etc.

[peng1999]

Check for existing issues

• Completed

Describe the feature

If I have a buffer:
ˇ试一试abc试一试 a
and press w in vim mode, the whole string "试一试abc试一试" is recognized as a single word and the buffer will become
试一试abc试一试 ˇa.
This is not expected. In Vim/Neovim it will know the CJK characters is different from Latin characters and become
试一试ˇabc试一试 a

The related code in Neovim is
https://github.com/neovim/neovim/blob/66bb1e577c96d8eb63c04dcc737394b4ce2b0f5d/src/nvim/mbyte.c#L1290-L1308. I think in zed we can just use Unicode Script property to distinguish the characters.

Environment

Zed: v0.162.5 (Zed)
OS: macOS 15.1.1
Memory: 16 GiB
Architecture: aarch64

If applicable, add mockups / screenshots to help present your vision of the feature

No response