Have processGRHoldTimerExpired call updateDsfState member

Summary:
As titled. All logic for state update and failure
handling moved to DsfSubscription::updateDsfState in previous diff

Reviewed By: zechengh09

Differential Revision:
D62064064

Privacy Context Container: L1125642

fbshipit-source-id: 7a41b60110ccd43e6971dbfb8045102cb2bda232

fboss/agent/DsfSubscription.cpp

@@ -492,10 +492,6 @@ void DsfSubscription::processGRHoldTimerExpired() {
     return std::shared_ptr<SwitchState>{};
   };
 
-  sw_->getRib()->updateStateInRibThread([this, updateDsfStateFn]() {
-    sw_->updateStateWithHwFailureProtection(
-        folly::sformat("Update state for node: {}", remoteNodeName_),
-        updateDsfStateFn);
-  });
+  updateDsfState(updateDsfStateFn);
 }
 } // namespace facebook::fboss