fix collapsing of multiline components and rsx!{} calls

[jkelleyrtp]

These two cases were annoying me but are now fixed.
Just random regressions that slipped through with the refactor/cleanup.

This was getting collapsed:

        Fragment {
            Fragment {
                Fragment {
                    Fragment {
                        Fragment { 
	                        div { "Finally have a real node!" } 
                        }
                    }
                }
            }
        }

We were randomly injecting more spaces than we should have

return rsx!();
return rsx!(  );

There's still a few more issues I'm not addressing here:

// this is getting collapsed to one line when I'd rather it not - all closures should force a newline
FancyButton { 
    onclick: move |event| println!("Clicked! {event:?}"), 
}

// we're just eating comments completely with empty
rsx! {
   // please dont kill me :/
}

// we're also eating trailing comments, which I thought we fixed. Sometimes it saves them but with wrong indentation
rsx! {
   div {}
   // please dont kill me :/
}