KT-1936 codegen tests for issue which in fact frontend one

compiler/testData/codegen/regressions/kt1936_1.kt

@@ -0,0 +1,13 @@
+trait MyTrait
+{
+    var property : String
+    fun foo() = property
+}
+
+open class B(param : String) : MyTrait
+{
+    override var property : String = param
+    override fun foo() = super.foo()
+}
+
+fun box()= B("OK").foo()

compiler/testData/codegen/regressions/kt1936_2.kt

@@ -0,0 +1,15 @@
+open class MyClass(param : String) {
+    var propterty = param
+}
+
+trait MyTrait : MyClass
+{
+    fun foo()  = propterty
+}
+
+open class B(param : String) : MyTrait, MyClass(param)
+{
+    override fun foo() = super<MyTrait>.foo()
+}
+
+fun box()= B("OK").foo()