After #16617, the following code should be improved the comma should insert before the fist comment, not the last comment.

Prettier pr-16617
Playground link

--parser scss

Input:

$my-map: (
  'foo': 1, // Comment
  'bar': 2 // Comment
  // Comment
);

Output:

$my-map: (
  "foo": 1,
  // Comment
  "bar": 2 // Comment
  , // Comment
);

Expected output:

Why?