Tests for not reproduced KT-1770, KT-3001 and KT-3414

#KT-3414 Can't Reproduced
 #KT-3001 Can't Reproduced
 #KT-1770 Can't Reproduced

compiler/testData/codegen/box/classes/kt3001.kt

@@ -0,0 +1,11 @@
+trait A {
+    val result: String
+}
+
+class Base(override val result: String) : A
+
+open class Derived : A by Base("OK")
+
+class Z : Derived()
+
+fun box() = Z().result

compiler/testData/codegen/box/classes/kt3414.kt

@@ -0,0 +1,18 @@
+trait A {
+    fun foo(): Int
+}
+
+trait B {
+    fun foo(): Int
+}
+
+class Z(val a: A) : A by a, B
+
+fun box(): String {
+    val s = Z(object : A {
+        override fun foo(): Int {
+            return 1;
+        }
+    });
+    return if (s.foo() == 1) "OK" else "fail"
+}