Fix stack level too deep on RbConfig constant alias resolution

Author: pkondzior

lib/ruby_indexer/lib/ruby_indexer/index.rb

@@ -433,7 +433,13 @@ def follow_aliased_namespace(name, seen_names = [])
         case entry
         when Entry::ConstantAlias
           target = entry.target
-          return follow_aliased_namespace("#{target}::#{real_parts.join("::")}", seen_names)
+          target_name = "#{target}::#{real_parts.join("::")}"
+          # circula resolution can be bailed out to target entry
+          if name == target_name
+            return entry
+          else
+            return follow_aliased_namespace(target_name, seen_names)
+          end
         when Entry::UnresolvedConstantAlias
           resolved = resolve_alias(entry, seen_names)