Incorrect hover on var inside {@snippet} shows Corext instead of Javadoc

Consider the below snippet.

```
/// {@snippet :
/// var s = 3;
/// }
public class Example {
}
```

Mouse hover or place the curser over **var** showing unwanted Corext messages. It should display the javadoc instead. Issue exists in both javadoc and markdown.

Reproduce the supplied {@snippet} example and place the cursor over var in both the Javadoc and Markdown paths. Trace the hover behavior for that snippet; done means the hover displays the expected Javadoc information instead of the unwanted Corext message.

Written by the indexing model from the issue text.