JS: move expressions test to box tests

js/js.translator/testData/box/expression/cast/primitiveToClass.kt

@@ -0,0 +1,19 @@
+package foo
+
+interface A
+
+class B
+
+fun box(): String {
+    assertEquals(false, (23 as Any) is A)
+    assertEquals(false, (23 as Any) is B)
+    assertEquals(false, (23L as Any) is A)
+    assertEquals(false, (23L as Any) is B)
+    assertEquals(false, ("qwe" as Any) is A)
+    assertEquals(false, ("qwe" as Any) is B)
+    assertEquals(false, ({ 23 } as Any) is A)
+    assertEquals(false, ({ 23 } as Any) is B)
+    assertEquals(false, (true as Any) is A)
+    assertEquals(false, (true as Any) is B)
+    return "OK"
+}