fix: restore comment attachment to formal parameters, including JSNI comments

[jtkiesel]

What changed with this PR:

Prettier is allowed to attach comments to formal parameters nodes again. Printing of comments inside of empty formal parameters is also aligned more closely with Prettier JS/TS again.

Note that JSNI comments still cause the method definition's parameter list to be wrapped. This is not ideal, but is the way it was working previously, so this PR will be merged to restore JSNI support and a follow-on effort can attempt to fix the forced wrapping issue.

Example

Input

class JSNI {
  private native JsArray<MyItem> getItems() /*-{
    return this.items
  }-*/;

  private static native void registerHandler(MyHandler handler) /*-{
    $doc.addEventListener("visibilitychange", function () {
      handler.@com.example.MyHandler::onEvent()();
    });
  }-*/;
}

class DanglingComments {

  void two(
    // alpha
  ) {}

  void three(
    // alpha
    // beta
  ) {}

  void four(
    // alpha
    // beta
    /* gamma */
  ) {}

  void five( // alpha
  ) {}

  void six(/* alpha */) {}

  void seven(
    /* alpha */
    /* beta */
  ) {}

  void eight(
    /* alpha */
    // beta
  ) {}

  void nine(
  /* alpha */
  ) {}

  void two(
    String one
    // alpha
  ) {}

  void three(
    String one
    // alpha
    // beta
  ) {}

  void four(
    // alpha
    String one
    // beta
    /* gamma */
  ) {}

  void seven(
    /* alpha */
    String one
    /* beta */
  ) {}

  void eight(
    /* alpha */
    String one
    // beta
  ) {}

  void nine(String one
  /* alpha */
  ) {}
}

Output

class JSNI {

  private native JsArray<MyItem> getItems() /*-{
    return this.items
  }-*/;

  private static native void registerHandler(
    MyHandler handler
  ) /*-{
    $doc.addEventListener("visibilitychange", function () {
      handler.@com.example.MyHandler::onEvent()();
    });
  }-*/;
}

class DanglingComments {

  void two(
    // alpha
  ) {}

  void three(
    // alpha
    // beta
  ) {}

  void four(
    // alpha
    // beta
    /* gamma */
  ) {}

  void five(
    // alpha
  ) {}

  void six(/* alpha */) {}

  void seven(
    /* alpha */
    /* beta */
  ) {}

  void eight(
    /* alpha */
    // beta
  ) {}

  void nine(/* alpha */) {}

  void two(
    String one
    // alpha
  ) {}

  void three(
    String one
    // alpha
    // beta
  ) {}

  void four(
    // alpha
    String one
    // beta
    /* gamma */
  ) {}

  void seven(
    /* alpha */
    String one
    /* beta */
  ) {}

  void eight(
    /* alpha */
    String one
    // beta
  ) {}

  void nine(
    String one
    /* alpha */
  ) {}
}

Relative issues or prs:

Closes #957