SWDEV-335780 - Indicate if handler is queued

Maintain status of handler callback. For event records we no longer
submit callbacks to reduce the load on the async handler thread. However
without a callback we leak command memory/decrement refcounts. Indicate
status of the handler which we can use to queue a callback when
finish is called.

Change-Id: I89fd02f3d047a0e8162664ee17581a14795f1928

rocclr/device/rocm/rocdevice.cpp

@@ -2659,7 +2659,7 @@ void Device::getHwEventTime(const amd::Event& event, uint64_t* start, uint64_t*
 // ================================================================================================
 bool Device::IsCacheFlushed(Device::CacheState state) const {
 
-  return ROC_EVENT_NO_FLUSH ? 
+  return ROC_EVENT_NO_FLUSH ?
          (static_cast<int>(state) == cache_state_.load(std::memory_order_relaxed)) : true;
 }