When folding tuples the trailing comma is not removed

[pieter-bos]

Configuration

version = 3.7.14
runner.dialect = scala213
newlines.source = fold

Command-line parameters

$ scalafmt --version
scalafmt 3.7.14

$ scalafmt src

$ scalafmt src
/(...)/src/Main.scala:2: error: [dialect scala213] illegal start of simple expression
  val x = ("a", "b", )
                     ^

Steps

Given code like this:

object Main {
  val x = (
    "a", 
    "b",
  )

  val y = Seq(
    "a",
    "b",
  )
}

Problem

Scalafmt formats code like this:

object Main {
  val x = ("a", "b", )

  val y = Seq("a", "b")
}

Expectation

I would like the formatted output to look like this:

object Main {
  val x = ("a", "b")

  val y = Seq("a", "b")
}

Notes

I also tried with rewrite.trailingCommas.allowFolding = false and this does not help.

[kitbellew]

fyi, #3743 reported additional bugs.