Use via pair solution in 2025 day 11 by default

Author: sim642

src/main/scala/eu/sim642/adventofcode2025/Day11.scala

@@ -162,7 +162,7 @@ object Day11 {
   lazy val input: String = scala.io.Source.fromInputStream(getClass.getResourceAsStream("day11.txt")).mkString.trim
 
   def main(args: Array[String]): Unit = {
-    import ViaMapSolution._
+    import ViaPairSolution._
 
     println(Part1.countPaths(parseDevices(input)))
     println(Part2.countPaths(parseDevices(input)))