[JS] Incorrect highlighting of unused variable

### Apache NetBeans version

Apache NetBeans 18

### What happened

Example code:

```js
class Foo {
bar(options = {}) {
const callback = options.callback || (() => true);
callback();
}
}
```

In line 3 variable `callback` highlighted as unused variable, however there is a usage right on next line.

### How to reproduce

_No response_

### Did this work correctly in an earlier version?

No / Don't know

### Operating System

Windows 10

### JDK

16.0.1

### Apache NetBeans packaging

Apache NetBeans provided installer

### Anything else

_No response_

### Are you willing to submit a pull request?

No

Reproduce the example in the NetBeans 18 JavaScript editor on Windows 10 and inspect how the `callback` declaration and its next-line invocation are analyzed. Done means the variable is no longer highlighted as unused when it is called.

Written by the indexing model from the issue text.