[Playground] Bug: When you input Korean in Playground Poll Input, it appears twice

[pppfeeling]

Lexical version:

Steps To Reproduce

1. go playground web site (https://playground.lexical.dev/)
2. insert Poll
3. Enter Korean in the option input
4. If you input ㅎ, ㅎㅎ will be printed.
5. If you input Hangul once, the letters will appear twice.
6. English works fine.

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example bug screen

[etrepum]

Which platform and browser are you using?

[etrepum]

I can't reproduce this on macOS 15.3.1 with Chrome, Firefox or Safari with the 2-Set Korean keyboard enabled

[pppfeeling]

When I work on ios (ipad), it is fine.

but when i work on windows 11, it is not work.
chrome, edge broswer is same bad operation.

when I just key down once (only korea letter), but twice letter print.

one keydown, two command dispatch execute.

But Title input is ok.