The abnormal reaction entered after the `Embed` format.

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Steps for Reproduction

1. Visit quilljs.com
2. Add content after the mathematical formula to reproduce

Expected behavior:

Actual behavior:

1. When entering English characters for the first time, the first character is displayed at the back, and the cursor position is incorrect (only appears on the first edit).
2. After entering Chinese text, the cursor is positioned at the front of the input content. I use the Windows 11 system input method.

Platforms:

chrome: 128.0.6613.120 Windows 11: 22631.4037

Version:

2.0.2

[cscxj]

There are such problems with using Embed custom formats