Fix bug with topic statistics for intra process comms

[roman-y-wu]

Description

Fixes #2911

Is this user-facing behavior change?

Yes, this patch updates SubscriptionIntraProcess to pass along the topic statistics pointer and call the statistics handler during intra-process message deliveries. This ensures that topic statistics—such as message age and publishing period—are still computed when use_intra_process_comms is enabled, which is important for users monitoring performance metrics.

Did you use Generative AI?

No.

Additional Information

n/a