Syntax highlighting is not applied if a rule has `[$***]` modifier

### Please answer the following questions for yourself before submitting an issue

- [X] Filters were updated before reproducing an issue
- [X] I checked the [knowledge base](https://adguard.com/kb/) and found no answer
- [X] I checked to make sure that this issue has not already been filed

### AdGuard Extension version

4.4.1

### Browser version

Chrome 126.0.6478.128

### OS version

Windows 10 x64

### Ad Blocking

AdGuard Base filter

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### Language-specific

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### What Stealth Mode options do you have enabled?

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### Issue Details

Steps to reproduce:
Add these rules and compare the highlighting

```
[$path=/aaa]example.com#%#//scriptlet('json-prune')
example.com#%#//scriptlet('json-prune')
```

### Expected Behavior

Highlighting is applied to all valid rules.

### Actual Behavior

Highlighting is not applied to the rule with modifier


### Screenshots

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### Additional Information

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