[SYCL][NFC] Fix copy instead of move Coverity hits (#20876)

Author: sergey-semenov

sycl/source/detail/queue_impl.cpp

@@ -624,7 +624,7 @@ EventImplPtr queue_impl::submit_graph_direct_impl(
                                       detail::CGType::ExecCommandBuffer),
               /*SchedulerBypass*/ false};
     } else {
-      return ExecGraph->enqueue(*this, CGData, EventNeeded);
+      return ExecGraph->enqueue(*this, std::move(CGData), EventNeeded);
     }
   };
   // If the graph contains a host task, we may need to insert a barrier prior

sycl/source/detail/queue_impl.hpp

@@ -377,17 +377,17 @@ class queue_impl : public std::enable_shared_from_this<queue_impl> {
   }
 
   void submit_graph_direct_without_event(
-      std::shared_ptr<ext::oneapi::experimental::detail::exec_graph_impl>
-          ExecGraph,
+      const std::shared_ptr<ext::oneapi::experimental::detail::exec_graph_impl>
+          &ExecGraph,
       sycl::span<const event> DepEvents, const detail::code_location &CodeLoc,
       bool IsTopCodeLoc) {
     submit_graph_direct_impl(ExecGraph, false, DepEvents, CodeLoc,
                              IsTopCodeLoc);
   }
 
   event submit_graph_direct_with_event(
-      std::shared_ptr<ext::oneapi::experimental::detail::exec_graph_impl>
-          ExecGraph,
+      const std::shared_ptr<ext::oneapi::experimental::detail::exec_graph_impl>
+          &ExecGraph,
       sycl::span<const event> DepEvents, const detail::code_location &CodeLoc,
       bool IsTopCodeLoc) {
     return createSyclObjFromImpl<event>(submit_graph_direct_impl(