Remove Typescript warning to non-defined name when special method names are used

[joojscript]

When using typescript, we get these kinds of warnings on VSCode:

That's because VSCode and the TS Server can't tell that we have this method up above:

renderLink({ children, href }) {
 const link = href + '?ref=create-nullstack-app';
 return (
 <a href={link} target="_blank" rel="noopener noreferrer">
 {children}
 </a>
 )
 }

and that this would do the job internally on Nullstack