[jvm] Wrong bytecode generated for varargs constructor?

With this extern class: https://www.keycloak.org/docs-api/15.0/javadocs/org/keycloak/component/ComponentValidationException.html

```haxe
static function main()
trace(new ComponentValidationException('foo'));
```

At runtime:
```
Exception in thread "main" java.lang.NoSuchMethodError: org.keycloak.component.ComponentValidationException: method 'void (java.lang.String)' not found
```

So apparently the compiler generated a call as if the constructor is:
`ComponentValidationException(String message)`
but it actually is:
`ComponentValidationException(String message, Object... parameters) `

Repro case here:
https://github.com/kevinresol/haxe_issues/tree/issue_10380