[BUG] when a content has '{}' chars，editor appears errors with jsxPlugin.

[samuelhsin]

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• [O] I have searched for similar issues in both open and closed tickets and cannot find a duplicate.
• [O] I have read the documentation and cannot find an answer.

Describe the bug hen a content has '{}' chars，editor appears errors with jsxPlugin.

The source code is below:	1	2	3	4
{"a":"test"}	{"a":"test"}	1234	1234

and rich mode appears parsing expression errors.

Error parsing markdown: Could not parse expression with acorn. You can fix the errors in source mode and switch to rich text mode when you are ready.

Screenshots If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: MacOS
• Browser: Chrome

[petyosi]

That's expected I believe. These are treated as JSX expressions.

[samuelhsin]

I comment the code:

 [addSyntaxExtension$]: mdxjs(),

and works.