JS: replace all usages of @native annotation with external modifier, in tests, stdlib, etc

js/js.translator/testData/box/native/passExtLambdaFromNative.kt

@@ -1,14 +1,13 @@
 package foo
 
-@native
-internal class A(val v: String)
+internal external class A(val v: String)
 
 internal class B {
     fun bar(a: A, extLambda: A.(Int, String) -> String): String = a.extLambda(7, "_rr_")
 }
 
-@native
-internal fun nativeBox(b: B): String = noImpl
+
+internal external fun nativeBox(b: B): String = noImpl
 
 fun box(): String {
     val r = nativeBox(B())