constructor default parameters are reused for case class apply

A case class apply method does not have default parameters generated, instead the constructor default parameters are reused, I believe that this is undocumented - causing https://github.com/scala/bug/issues/12409

Compiler version

3.0.1

Minimized code

case class CaseClassDefault(value: Int = 1)

val foo = Scala3CaseClass.apply()

Output

val foo: CaseClassDefault = CaseClassDefault.apply(CaseClassDefault.`<init>$default$1`)

Expectation

val foo: CaseClassDefault = CaseClassDefault.apply(CaseClassDefault.`apply$default$1`)

Notes

extract from generated code:

final lazy module val CaseClassDefault: CaseClassDefault$ = 
  new CaseClassDefault$()
final module class CaseClassDefault$() extends AnyRef() { 
  this: CaseClassDefault.type =>
  def apply(value: Int): CaseClassDefault = new CaseClassDefault(value)
  def unapply(x$1: CaseClassDefault): CaseClassDefault = x$1
  override def toString: String = "CaseClassDefault"
  def $lessinit$greater$default$1: Int @uncheckedVariance = 1
}

[bishabosha]

perhaps an extra note in the documentation about the dropping of generation of default parameter forwarders for synthetic apply methods is required

[odersky]

Great! @bishabosha Can I leave the issue here for to you to close once the scala/scala side is resolved?