JS: fixed <Type>Array.iterator methods; added -Xtypedarray compiler key

The <Type>Array.iterator used to lack next<Type>() method (KT-16626).

The -Xtypedarray compiler key enables translation of primitive arrays
to TypedArrays, and primitive array`is`-checks (KT-15358, KT-14007,
KT-14614, KT-16056).

compiler/testData/codegen/box/arrays/arrayInstanceOf.kt

@@ -1,5 +1,4 @@
-// TODO: muted automatically, investigate should it be ran for JS or not
-// IGNORE_BACKEND: JS
+// IGNORE_BACKEND_WITHOUT_CHECK: JS
 
 //test [], get and iterator calls
 fun test(createIntNotLong: Boolean): String {