Update driver and operator stats when close by task (facebookincubato…

…r#9327)

Summary:

Currently the stats are not updated if close is issued by task.

Fix facebookincubator#9301

Differential Revision: D55601334

velox/exec/Driver.cpp

@@ -853,6 +853,7 @@ void Driver::closeByTask() {
   VELOX_CHECK(isOnThread());
   VELOX_CHECK(isTerminated());
   closeOperators();
+  updateStats();
   closed_ = true;
 }