Quoted patterns do not support Array repeated arguments

[smarter]

Repeated arguments (foo(xs: _*)) can either be Seq or Array (Scala 2.13 deprecates passing Array to Scala methods taking repeated arguments, but allows passing both Array and Seq to Java methods, Dotty doesn't implement that deprecation currently). But quoted patterns assume that a repeated argument is a Seq:
https://github.com/lampepfl/dotty/blob/588ac1b9252802e118d080dae86f7c3756dbfee6/compiler/src/dotty/tools/dotc/typer/Typer.scala#L730

import scala.quoted._

object Macros {
  inline def testSeq(): Any = ${impl('{java.util.Arrays.asList[Int](Seq(1): _*)})}
  inline def testArray(): Any = ${impl('{java.util.Arrays.asList[Int](Array(1): _*)})}

  private def impl(expr: Expr[Any])(using QuoteContext): Expr[Any] = expr match {
    case '{ java.util.Arrays.asList[$t]($xs: _*) } =>
      xs
    case _ =>
      '{ "FAIL" }
  }
}

import Macros._

object Test {
  def main(args: Array[String]): Unit = {
    println(testSeq()) // "List(1)"
    println(testArray()) // "FAIL"
  }
}

[smarter]

(note that I have an open PR which interacts with this code which is how I found this: #8669)