message: re-enable external proguard parsing
  Summary:
  This was actually fixed by so we can remove this broad fix now.
  Should we promo this change to stable early? I know the video team wanted it sooner rather than later
diff: @@ -881,9 +881,7 @@ void process_proguard_rules(const ProguardMap& pg_map,
  hierarchy,
  process_assumenosideeffects,
  "assumenosideeffects",
  - // This should be true. Setting it to false for now to fix a sev
  - // T31428168
  - /* process_external = */ false);
  + /* process_external = */ true);
  // By default, keep all annotation classes.
  for (auto cls : classes) {
  