Depsgraph: Prioritize evaluation of the new scheduled nodes

The idea here is again to finish objects evaluation as soon as possible.

Seems to be giving another 3% speedup in the barber scenes.

source/blender/depsgraph/intern/eval/deg_eval.cc

@@ -304,7 +304,7 @@ static void schedule_node(TaskPool *pool, Depsgraph *graph, unsigned int layers,
 					                               deg_task_run_func,
 					                               node,
 					                               false,
-					                               TASK_PRIORITY_LOW,
+					                               TASK_PRIORITY_HIGH,
 					                               thread_id);
 				}
 			}