Quoted pattern with `: _*` crashes while typing

[nicolasstucki]

import scala.quoted._
import scala.tasty.Reflection
object Macros {
  def impl(self: Expr[StringContext]) given Reflection: Expr[String] = self match {
    case '{ StringContext() } => '{""}
    case '{ StringContext($part1) } => part1
    case '{ StringContext($part1, $part2) } => '{ $part1 + $part2 }
    case '{ StringContext($parts: _*) } => '{ $parts.mkString }
  }
}

Crashes with

java.lang.Error: internal error: type of quoted pattern selector ? is not fully defined, pos = [344..350] while compiling tests/run-with-compiler/quote-matcher-string-interpolator/quoted_1.scala
Exception in thread "main" java.lang.Error: internal error: type of quoted pattern selector ? is not fully defined, pos = [344..350]
	at dotty.tools.dotc.typer.Inferencing$.fullyDefinedType(Inferencing.scala:43)
	at dotty.tools.dotc.typer.Typer.$anonfun$typedSplice$1(Typer.scala:1990)
	at dotty.tools.dotc.util.Stats$.track(Stats.scala:37)
	at dotty.tools.dotc.typer.Typer.typedSplice(Typer.scala:1982)
	at dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:2111)
	at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:2125)
	at dotty.tools.dotc.typer.Typer.$anonfun$typed$2(Typer.scala:2159)
	at dotty.tools.dotc.reporting.TraceSyntax.apply(trace.scala:56)
	at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2152)
	at dotty.tools.dotc.typer.Typer.typed(Typer.scala:2171)
	at dotty.tools.dotc.typer.Typer.typedExpr(Typer.scala:2247)
	at dotty.tools.dotc.typer.Typer.typedWildcardStarArgExpr$1(Typer.scala:583)
	at dotty.tools.dotc.typer.Typer.$anonfun$typedTyped$3(Typer.scala:597)
	at dotty.tools.dotc.typer.Typer.cases$1(Typer.scala:566)
	at dotty.tools.dotc.typer.Typer.$anonfun$typedTyped$1(Typer.scala:595)
	at dotty.tools.dotc.util.Stats$.track(Stats.scala:37)
	at dotty.tools.dotc.typer.Typer.typedTyped(Typer.scala:552)
	at dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:2075)
	at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:2125)
	...

Note that in this particular case the type of parts should be Expr[Seq[String]]