Fix not generating KotlinLightField for OBJECT$ and INSTANCE$ fields

Fix navigation from Java to such fields
Fix TODO in converter

idea/testData/resolve/referenceInJava/ClassObjectField.java

@@ -0,0 +1,7 @@
+public class ClassObjectField {
+    public static void foo() {
+        k.ClassWithClassObject.OB<caret>JECT$.f();
+    }
+}
+
+// REF: class object of (k).ClassWithClassObject

idea/testData/resolve/referenceInJava/ObjectInstance.java

@@ -0,0 +1,7 @@
+public class ObjectInstance {
+    public static void foo() {
+        k.KotlinObject.INSTANCE<caret>$.f();
+    }
+}
+
+// REF: (k).KotlinObject

idea/testData/resolve/referenceInJava/dependencies.kt

@@ -11,4 +11,14 @@ public enum class EnumClass {
 
 
 public fun topLevelFun() {
+}
+
+public class ClassWithClassObject {
+    class object {
+        fun f() = 1
+    }
+}
+
+public object KotlinObject {
+    fun f() = 1
 }