JS: validate AST when serializing to IC cache

js/js.tests/test/org/jetbrains/kotlin/js/test/AbstractJsLineNumberTest.kt

@@ -55,7 +55,7 @@ abstract class AbstractJsLineNumberTest : KotlinTestWithEnvironment() {
             orderedModules.asReversed().forEach { module ->
                 val baseOutputPath = module.outputFileName(file)
 
-                val translator = K2JSTranslator(createConfig(module, file, modules))
+                val translator = K2JSTranslator(createConfig(module, file, modules), true)
                 val units = module.files.map { TranslationUnit.SourceFile(createPsiFile(it.fileName)) }
                 val translationResult = translator.translateUnits(ExceptionThrowingReporter, units, MainCallParameters.noCall())
 

js/js.tests/test/org/jetbrains/kotlin/js/test/BasicBoxTest.kt

@@ -461,7 +461,7 @@ abstract class BasicBoxTest(
         runtime: JsIrTestRuntime,
         isMainModule: Boolean
     ) {
-        val translator = K2JSTranslator(config)
+        val translator = K2JSTranslator(config, true)
         val translationResult = translator.translateUnits(ExceptionThrowingReporter, units, mainCallParameters)
 
         if (translationResult !is TranslationResult.Success) {