[Enhancement] Add notifyLast for PopLongPollingService

[drpmma]

Before Creating the Enhancement Request

• [X] I have confirmed that this should be classified as an enhancement rather than a bug/feature.

Summary

Add notifyLast for PopLongPollingService

Motivation

To notify a newer request to prevent notifying an invalidate request.

Describe the Solution You'd Like

Add notifyLast for PopLongPollingService

Describe Alternatives You've Considered

No

Additional Context

No response

[yp969803]

/assign