J2K: correct conversion of nested class references

#KT-5294 Fixed
 #KT-5400 Fixed

j2k/tests/testData/ast/issues/kt-5294.java

@@ -0,0 +1,11 @@
+import java.util.List;
+
+class X {
+    private final List<Y> list;
+
+    X(List<Y> list) {
+        this.list = list;
+    }
+
+    class Y{}
+}