Fix GetNotificationsReport

XXClient

• Add NotificationReport array coding helpers.
• Fix GetNotificationsReport` so it returns array.

XXMessengerClient

• Update MessengerGetNotificationReport.
• Rename MessengerGetNotificationReport to MessengerGetNotificationReports.

requested review from @brunomunizaf

assigned to @darrarski.xx

enabled an automatic merge when the pipeline for 20f41917 succeeds

mentioned in commit 58d1392d

merged