[BUG] Wrong Formatting for Text After Exclamation Mark at the Middle of Text

[kookma]

Describe the bug

When you use exclamation mark in the middle of a text, CM6 interprets it as Heading 1.
So, it shows the following text with format h1.

Expected behavior

The format shall follow the surrounding text format.
The ! in the middle of text is exclamation mark NOT heading!

To Reproduce

1. open new tiddler
2. write below text

This is a new editor!
It is powerful
```


### Screenshots

![msedge_img_306_20240923](https://github.com/user-attachments/assets/0120f698-83f4-4e2f-9125-f20332d83b50)





### Configuration

TW 5.3.5
Edge 128
Windows 11

### Additional context

_No response_

[oeyoews]

I admit that the current tw syntax highlighting is a bit bad, I will add a configuration to turn it off.

[kookma]

In the op the screenshot was not shown. I added it here for future references if any!

[oeyoews]