Set JS compiler to BOTH

See https://kotlinlang.org/docs/js-ir-compiler.html#authoring-libraries-for-the-ir-compiler-with-backwards-compatibility

build.gradle.kts

@@ -67,7 +67,7 @@ subprojects {
                     }
                 }
 
-                js {
+                js(BOTH) {
                     browser()
                     nodejs()
                 }