[K/JS] Remove isObject check from runtime ^KT-57926 Fixed

js/js.translator/testData/box/standardClasses/any.kt

@@ -1,6 +1,5 @@
 // EXPECTED_REACHABLE_NODES: 1285
 // CHECK_CALLED_IN_SCOPE: function=isType scope=box TARGET_BACKENDS=JS
-// CHECK_CALLED_IN_SCOPE: function=isObject scope=box IGNORED_BACKENDS=JS
 package foo
 
 class A : Any()
@@ -16,7 +15,11 @@ fun box(): String {
 
     if (arrayOf(1, 2, 3).asAny() !is Any) return "fail3"
 
-    if (createNakedObject() is Any) return "fail4"
+    if (testUtils.isLegacyBackend()) {
+        if (createNakedObject() is Any) return "fail4"
+    } else {
+        if (createNakedObject() !is Any) return "fail4"
+    }
 
     if (({ }).asAny() !is Any) return "fail5"
 
@@ -28,6 +31,8 @@ fun box(): String {
 
     if ("bar".asAny() !is Any) return "fail9"
 
+    if (null is Any) return "fail10"
+
     return "OK"
 }