Trait properties parsed when commented out

Commented out trait properties are still recognized by the trait parser.

```haxe
//@prop var a = 23;
/*
@prop var b = 23;
*/
```

Start by locating the trait parser and how it handles the Haxe examples in the issue; no source files or tests are named in the report. Check whether both the line-commented and block-commented @prop declarations are recognized, and identify or add coverage for them. Done means commented-out properties are ignored while active trait properties continue to parse.

Written by the indexing model from the issue text.