[Bug]: Comments in otherwise empty object pattern disappear when formatting

[Meowtimer]

Description

When formatting code with object patterns containing comments (probably property expressions commented out for debugging or some such) which are otherwise empty the formatter produces a completely empty object pattern without the comments.

Steps to Reproduce

Format code with comments in object pattern.

var match = obj is {
    //Property: 123
};

=>

var match = obj is { };

Expected Behavior

Comments left intact.

Actual Behavior

Comments removed.