JS backend: fix get mangling name for generic methods with multiply upper bounds

js/js.translator/testData/nameClashes/cases/methodOverloadInClassWithTwoUpperBounds.kt

@@ -0,0 +1,29 @@
+package foo
+
+trait TraitA
+trait TraitB
+
+public open abstract class Node<T : TraitA>() where T : TraitB {
+    public abstract fun bar(arg: T): String
+    public abstract fun bar(arg: TraitA): String
+    public abstract fun bar(arg: TraitB): String
+}
+
+class ClassAB : TraitA, TraitB
+
+public class MyNode : Node<ClassAB>() {
+    override fun bar(arg: ClassAB): String = "MyNode.bar(ClassAB)"
+    override fun bar(arg: TraitA): String = "MyNode.bar(TraitA)"
+    override fun bar(arg: TraitB): String = "MyNode.bar(TraitB)"
+}
+
+
+fun box(): String {
+
+    var node = MyNode()
+    assertEquals("MyNode.bar(ClassAB)", node.bar(ClassAB()))
+    assertEquals("MyNode.bar(TraitA)", node.bar(ClassAB(): TraitA))
+    assertEquals("MyNode.bar(TraitB)", node.bar(ClassAB(): TraitB))
+
+    return "OK"
+}