Build: Specify LIBRARY_ELEMENTS_ATTRIBUTE to JAR for configurations with js libraries

prepare/compiler/build.gradle.kts

@@ -35,6 +35,9 @@ val proguardLibraries by configurations.creating {
 // Libraries to copy to the lib directory
 val libraries by configurations.creating {
     exclude("org.jetbrains.kotlin", "kotlin-stdlib-common")
+    attributes {
+        attribute(LibraryElements.LIBRARY_ELEMENTS_ATTRIBUTE, objects.named(LibraryElements.JAR))
+    }
 }
 
 // Compiler plugins should be copied without `kotlin-` prefix