PSI2IR KT-49203 INVISIBLE_FAKE setter is non-referenceable

compiler/testData/codegen/box/properties/kt49203_lateinit.kt

@@ -0,0 +1,25 @@
+class X {
+    var value = ""
+
+    operator fun plusAssign(data: String) {
+        value += data
+    }
+}
+
+abstract class A {
+    lateinit var x: X
+        private set
+
+    fun init() {
+        x = X()
+    }
+}
+
+class B : A()
+
+fun box(): String {
+    val a = B()
+    a.init()
+    a.x += "OK"
+    return a.x.value
+}

compiler/testData/codegen/box/properties/kt49203_var.kt

@@ -0,0 +1,20 @@
+class X {
+    var value = ""
+
+    operator fun plusAssign(data: String) {
+        value += data
+    }
+}
+
+abstract class A {
+    var x: X = X()
+        private set
+}
+
+class B : A()
+
+fun box(): String {
+    val a = B()
+    a.x += "OK"
+    return a.x.value
+}