JS/RTTI. Fix run-time type checking against Comparable

js/js.translator/testData/rtti/cases/isComparable.kt

@@ -0,0 +1,25 @@
+package foo
+
+class A : Comparable<A> {
+    override fun compareTo(other: A): Int = 0
+}
+
+class B
+
+fun test(x: Any?): Boolean = x is Comparable<*>
+
+fun box(): String {
+    assertEquals(true, test(A()), "A()")
+    assertEquals(true, test("abc"), "\"abc\"")
+    assertEquals(true, test('a'), "\'a\'")
+    assertEquals(true, test(0), "0")
+    assertEquals(true, test(0.toChar()), "0.toChar()")
+    assertEquals(true, test(0.toByte()), "0.toByte()")
+    assertEquals(true, test(0.toShort()), "0.toShort()")
+    assertEquals(true, test(0.toLong()), "0.toLong()")
+    assertEquals(true, test(0.toDouble()), "0.toDouble()")
+    assertEquals(true, test(0.toFloat()), "0.toFloat()")
+    assertEquals(false, test(B()), "B()")
+
+    return "OK"
+}