Fixed codegen for non-public SAM-adapters

compiler/testData/codegen/boxAgainstJava/sam/adapters/protectedFromBase.java

@@ -0,0 +1,5 @@
+class JavaClass<T> {
+    protected void execute(T t, Runnable r) {
+        r.run();
+    }
+}

compiler/testData/codegen/boxAgainstJava/sam/adapters/protectedFromBase.kt

@@ -0,0 +1,13 @@
+class KotlinClass : JavaClass<String>() {
+    fun doIt(): String {
+        var result = ""
+        execute("") {
+            result = "OK"
+        }
+        return result
+    }
+}
+
+fun box(): String {
+    return KotlinClass().doIt()
+}