runtime error when transform yfm-cut with curly brackets in title

Markup:
```md
{% cut "{title}" %}

content

{% endcut %}
```

`transform()` crash with error

```
Uncaught TypeError: Cannot read properties of undefined (reading 'type')
at exports.getMatchingOpeningToken (utils.js:236:1)
at Object.transform (patterns.js:328:1)
at Array.curlyAttrs (index.js:30:1)
at Core.process (parser_core.js:54:1)
at MarkdownIt.parseInline (index.js:561:1)
at Array.plugin (cut.js:32:1)
at Core.process (parser_core.js:54:1)
at MarkdownIt.parse (index.js:524:1)
at md.js:69:1
at transform (index.js:28:1)
```

[Example in playground](https://diplodoc-platform.github.io/playground/?input=%257B%2525%2520cut%2520%2522%257Btitle%257D%2522%2520%2525%257D%250A%250Acontent%250A%250A%257B%2525%2520endcut%2520%2525%257D%250A)