Revert "Drop direct dependency on portable-scala-reflect"

This reverts commit 6b6d2dc.

Author: sideeffffect

build.sbt

@@ -143,7 +143,9 @@ lazy val core = crossProject(JVMPlatform, JSPlatform, NativePlatform)
   .in(file("core"))
   .settings(commonSettings)
   .settings(
-    name := "scala-java-time"
+    name := "scala-java-time",
+    libraryDependencies += ("org.portable-scala" %%% "portable-scala-reflect" % "1.1.3")
+      .cross(CrossVersion.for3Use2_13)
   )
   .jsSettings(
     scalacOptions ++= {