Sort class IDs before training AppJIT snapshots

runtime/bin/main.cc

Index: runtime/bin/main.cc
diff --git a/runtime/bin/main.cc b/runtime/bin/main.cc
index 6a104c19b028771a5981724f32cd903e3e0d89bd..285a6a838ace540200bb57c6979bc4b6e539e6a8 100644
--- a/runtime/bin/main.cc
+++ b/runtime/bin/main.cc
@@ -1448,6 +1448,8 @@ bool RunMainIsolate(const char* script_name, CommandLineOptions* dart_options) {
                   script_name);
       }
 
+      if (gen_snapshot_kind == kAppJIT) Dart_SortClasses();
+
       // The helper function _getMainClosure creates a closure for the main
       // entry point which is either explicitly or implictly exported from the
       // root library.