Fix direct session count

[shepherd-l]

Description

One Line Summary

Reset direct sessions when the session ends.

Details

Motivation

Fix incorrect direct session count for notifications, prevents a direct session count from being sent up twice for the same notification.

Testing

Manual testing

Tested sending notifications from a direct session to another direct session, app build with Xcode 14.2 with the OneSignal example app on an iPhone 12 with iOS 15.5.

Steps

1. Send 2 notifications
2. Open notification 1 and immediately background the app
3. Wait for session to end (30+ seconds)
4. Open notification 2

Affected code checklist

• Notifications
  • Display
  • Open
  • Push Processing
  • Confirm Deliveries
• Outcomes
• Sessions
• In-App Messaging
• REST API requests
• Public API changes

Checklist

Overview

• I have filled out all REQUIRED sections above
• PR does one thing
• Any Public API changes are explained in the PR details and conform to existing APIs

Testing

• I have included test coverage for these changes, or explained why they are not needed
• All automated tests pass, or I explained why that is not possible
• I have personally tested this on my device, or explained why that is not possible

Final pass

• Code is as readable as possible.
• I have reviewed this PR myself, ensuring it meets each checklist item

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This change is 

[jennantilla]

Very cool to see the solution for this issue! Resetting the direct session count when the session ends prevents any new direct sessions from being counted multiple times for the same notification.