File tg_owt-abseil-compat.patch of Package tg_owt

--- a/src/api/task_queue/pending_task_safety_flag.h
+++ b/src/api/task_queue/pending_task_safety_flag.h
@@ -73,7 +73,7 @@
   // attached to.
   void SetNotAlive();
   void SetAlive(
-      absl::Nonnull<TaskQueueBase*> attached_queue);
+      TaskQueueBase* attached_queue);
 
   const SequenceChecker& sequence_checker_for_test() const {
     return main_sequence_;