Delegated members should not be synthetic

Otherwise they are invisible to Java code

compiler/testData/compileJavaAgainstKotlin/method/Delegation.java

@@ -0,0 +1,7 @@
+class JavaClass {
+    public static void main(String[] args) {
+        Test test = new Test();
+        test.foo();
+        test.getBar();
+    }
+}

compiler/testData/compileJavaAgainstKotlin/method/Delegation.kt

@@ -0,0 +1,11 @@
+trait Trait {
+    fun foo()
+    val bar: Int
+}
+
+class Impl: Trait {
+    override fun foo() {}
+    override val bar = 1
+}
+
+class Test : Trait by Impl()