Fix incorrect 'original' in property accessors

#KT-3930 Fixed

compiler/testData/codegen/box/traits/diamondPropertyAccessors.kt

@@ -0,0 +1,23 @@
+interface A {
+    var bar: Boolean
+        get() = false
+        set(value) { throw AssertionError("Fail set") }
+}
+
+interface B : A
+
+interface C : A {
+    override var bar: Boolean
+        get() = true
+        set(value) {}
+}
+
+interface D : B, C
+
+class Impl : D
+
+fun box(): String {
+    Impl().bar = false
+    if (!Impl().bar) return "Fail get"
+    return "OK"
+}

compiler/testData/codegen/box/traits/indirectlyInheritPropertyGetter.kt

@@ -0,0 +1,10 @@
+interface A {
+    val str: String
+        get() = "OK"
+}
+
+interface B : A
+
+class Impl : B
+
+fun box() = Impl().str