Avoid the accidental removal of comments inside expressions by dx fmt (#4410)

* Avoid the accidental removal of comments inside expressions by dx fmt

* Rewrite the logic to pass failed tests

* Removed unnecessary call to write_inline_comments

* add failing test case

* alter parsing a bit to handle more test cases

* almost there...

* fix

* use threadlocal

---------

Co-authored-by: Jonathan Kelley <jkelleyrtp@gmail.com>

packages/autofmt/tests/samples/many_exprs.rsx

@@ -148,6 +148,7 @@ fn app() -> Element {
                 value: format!("{:02}", timer.read().seconds),
                 oninput: move |e| {
                     timer.write().seconds = e.value().parse().unwrap_or(0);
+                    // A comment inside an expression
                 },
             }
         }