Overloaded extension method usage does not compile if the body of its callback argument is wrapped in braces

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Compiler version

Problem observed on 3.3.1. The problem started with 3.1.2, whereas 3.1.1 works fine. (according to scastie)

Minimized code

trait Printable {
  def pprint(v: () => String): Unit = {
    println(v())
  }
}

extension (ctx: Printable)
  def pprint(f: () => Int): Unit = {
    ctx.pprint(() => f().toString)
  }

val x = new Printable {}

def test =
  x.pprint(() => "hello")       // ok
  x.pprint(() => { "hello" })   // ok
  x.pprint(() => 123)           // ok
  x.pprint(() => ( 123 ))       // ok
  x.pprint(() => { 123 })       // FAIL

https://scastie.scala-lang.org/ShYSWt7NSnusCJKuCu8OOw

Output

In Scala 3.3.1 and as early as 3.1.2, this line: x.pprint(() => { 123 }) causes compiler error:

Found:    (123 : Int)
Required: String

Whereas in Scala 3.1.1, that line compiles fine.

Expectation

x.pprint(() => { 123 }) should compile, consistently with other similar usages shown in the code snippet.