[5.0.0] Push Subscription Observer - API update

[nan-li]

Description

One Line Summary

Push Subscription Observer - API update.

Details

Motivation

Push Subscription Observer - API update.

Scope

• Rename OSPushSubscriptionStateChanges to OSPushSubscriptionChangedState
• Rename event from onOSPushSubscriptionChanged to onPushSubscriptionDidChange
• Use current and previous instead of to and from
• No other logic changes, only naming

Public API

OneSignal.User.pushSubscription namespace
    func addObserver(_ observer: OSPushSubscriptionObserver)
    func removeObserver(_ observer: OSPushSubscriptionObserver)

protocol OSPushSubscriptionObserver {
    func onPushSubscriptionDidChange(state: OSPushSubscriptionChangedState)
}

class OSPushSubscriptionChangedState
    let current: OSPushSubscriptionState
    let previous: OSPushSubscriptionState
    func jsonRepresentation() -> NSDictionary 

Testing

Manual testing

Tested on Physical iPhone 13 with iOS 16.x

• AppDelegate and messaging controller and live activities controllers' callbacks fire when the push subscription changes

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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