Remove splitting ranges on emojis on the web

[Skalakid]

Details

This PR fixes the problem with triplicating syntaxes inside the Live Markdown Input, by removing range-splitting logic from the web platform and replacing it with the fix based on CSS styles. In the future, we will focus on fixing the web parser to support splitting emojis among all other styles (especially inline code block) and properly handle tag hierarchy edge cases when building HTML structure.

Related Issues

Expensify/App#55115

Manual Tests

1. To the text that contains emojis, add italics styling, e.g. _🥰 test 😇 test 🥹_
2. Verify if the text has italics style and emojis don't
3. Verify if it still works when adding other styles around it, e.g. # *~_🥰 test 😇 test 🥹_~*
4. Verify if emojis aren't strikethrough
5. Test it with different style combinations

Linked PRs

#597

[BartoszGrajdek]

LGTM! 👍🏻

One problem I have is that it's not possible to use CMD + ➡️ when the cursor is in front of emoji. (not sure if that's a blocker cc @tomekzaw)

SR

Screen.Recording.2025-01-16.at.16.17.18.mov

[os-botify]

🚀 Published to npm in 0.1.220 🎉