Test Throwable properties in JS, don't work as expected, commiting as ignored.

#KT-10911

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/StandardClassesTest.java

@@ -74,4 +74,8 @@ public final class StandardClassesTest extends SingleFileTranslationTest {
     public void testHashMapTypeOfElement() throws Exception {
         checkFooBoxIsOk();
     }
+
+    public void ignore_testThrowableImpl() throws Exception {
+        checkFooBoxIsOk();
+    }
 }

js/js.translator/testData/standardClasses/cases/throwableImpl.kt

@@ -0,0 +1,23 @@
+package foo
+
+class MyThrowable(message: String? = null) : java.lang.Exception(message) {
+
+    override val message: String?
+        get() = "My message: " + super.message
+
+    override val cause: Throwable?
+        get() = super.cause ?: this
+
+}
+
+fun box(): String {
+    try {
+        throw MyThrowable("test")
+    } catch (t: MyThrowable) {
+        if (t.cause != t) return "fail t.cause"
+        if (t.message != "My message: test") return "fail t.message"
+        return "OK"
+    }
+
+    return "fail: MyThrowable wasn't catched."
+}