MDEV-16264 prerequisite patch, enable thr_timer in embedded

Since threadpool is using thr_timer, and it also exist in embedded version,
initialize timer also in embedded version

sql/mysqld.cc

@@ -1995,9 +1995,7 @@ static void clean_up(bool print_message)
   sp_cache_end();
   free_status_vars();
   end_thr_alarm(1);			/* Free allocated memory */
-#ifndef EMBEDDED_LIBRARY
   end_thr_timer();
-#endif
   my_free_open_file_info();
   if (defaults_argv)
     free_defaults(defaults_argv);
@@ -4737,13 +4735,11 @@ static int init_server_components()
   init_thr_lock();
   backup_init();
 
-#ifndef EMBEDDED_LIBRARY
   if (init_thr_timer(thread_scheduler->max_threads + extra_max_connections))
   {
     fprintf(stderr, "Can't initialize timers\n");
     unireg_abort(1);
   }
-#endif
 
   my_uuid_init((ulong) (my_rnd(&sql_rand))*12345,12345);
   wt_init();