K2 IC: add lookups of candidates on tower level processing

Allow recording lookup to symbols from supertypes, required at least
for CRI.

partially fixes #KTIJ-29026

jps/jps-plugin/testData/incremental/lookupTracker/jvm/javaStatics/Main.java

@@ -3,4 +3,12 @@ public class Main {
     public static String staticField = "";
     public void regularMethod() {}
     public String regularField = "";
+
+    public void invoke() {
+    }
+
+    public static Main INSTANCE = new Main();
+
+    public static class Other extends Main {
+    }
 }