K2 IC: fix classifiers lookups

in particular nested classifiers and companions.

#KTIJ-24833 fixed
#KTIJ-24830 fixed
#KT-55195 fixed

jps/jps-plugin/testData/incremental/lookupTracker/jvm/namedCompanion/MainClass.kt

@@ -0,0 +1,9 @@
+/*p:<root>*/class MainClass {
+    companion object Name {
+        fun f() {
+
+        }
+
+        class T
+    }
+}