[SYCL] Reset event before using it (#7476)

Resetting event before using it helps to avoid unnecessary resets and
may improve performance.

Author: againull

sycl/plugins/level_zero/pi_level_zero.cpp

@@ -5830,14 +5830,15 @@ pi_event _pi_context::getEventFromContextCache(bool HostVisible,
   auto It = Cache->begin();
   pi_event Event = *It;
   Cache->erase(It);
+  // We have to reset event before using it.
+  Event->reset();
   return Event;
 }
 
 void _pi_context::addEventToContextCache(pi_event Event) {
   std::scoped_lock<pi_mutex> Lock(EventCacheMutex);
   auto Cache =
       getEventCache(Event->isHostVisible(), Event->isProfilingEnabled());
-  Event->reset();
   Cache->emplace_back(Event);
 }