Fix for KT-8928: NoSuchMethodError on private property setter in companion object

#KT-8928 Fixed

compiler/testData/codegen/box/properties/kt8928.kt

@@ -0,0 +1,16 @@
+class App {
+    fun init() {
+        s = "OK"
+    }
+    companion object {
+        var s: String = "Fail"
+            private set
+
+    }
+}
+
+fun box(): String {
+    App().init()
+
+    return App.s
+}