chore: Release 5.3.0

[onesignal-deploy]

Channels: Current

🎉 Custom Events Support

This beta release introduces Custom Events support for the cordova sdk (#1078).

Please see documentation on Custom Events.

We appreciate your experience and feedback using this beta version!

🛠️ Native Dependency Updates

• Update Android SDK from 5.4.2 to 5.6.0
  • feat: 🎉 introduces Custom Events Support for the Android SDK. To get started with using Custom Events, please contact support@onesignal.com to enable this feature for your app. Please see documentation on Custom Events.
  • feat: IAMs now display when triggers added before first fetch (#2528)
  • fix: end initialization early if device storage is locked (#2520)

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  • feature: Exposing accessors thru suspend (#2502)
  • fix: a rare NPE from PermissionViewModel introduced in 5.4.0 (#2504)
  • fix: NPE in SyncJobService since 5.4 (#2500)
  • fix: Rare User and Subscription creates and updates processing out of order (introduced in 5.4.0) (#2419)
  • fix: Remove throwing "initWithContext was not called or timed out", introduced in 5.4.0 (#2408)
  • Improvement: failure message shows that appID is missing (#2506)
  • improvement: Offloaded work on background threads. (#2394)

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• Update iOS SDK from 5.2.16 to 5.4.0
  • feat: IAMs now display when triggers added before first fetch (OneSignal-iOS-SDK#1635)
  • fix: use locale-independent formatting for purchase prices (OneSignal-iOS-SDK#1634)
  • It is recommended to test this beta version with a new iOS-only app, as Identity Verification is not yet supported on the OneSignal Android and Web SDKs.
  • Enabling Identity Verification in the dashboard will affect all existing app installations using the OneSignal user model SDKs.
  • Please test thoroughly prior to production use, and reach out with any questions, feedback, or concerns.
  • While emails and sms numbers can be added using the SDK, removing them is not yet supported.
  • Live Activities is not yet supported.
  • Rebased to 5.2.14 for more bug fixes and stability improvement.
  • add public log listener methods (see PR for usage) #1576
  • It is recommended to test this beta version with a new iOS-only app, as Identity Verification is not yet supported on the OneSignal Android and Web SDKs.
  • Enabling Identity Verification in the dashboard will affect all existing app installations using the OneSignal user model SDKs.
  • Please test thoroughly prior to production use, and reach out with any questions, feedback, or concerns.
  • While emails and sms numbers can be added using the SDK, removing them is not yet supported.
  • Live Activities is not yet supported.

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This change is 

[claude]

Code review

No issues found. Checked for bugs and CLAUDE.md compliance.

[fadi-george]

Had to filter out null values for android side for now:

[nan-li]

Picks into main should be separate PRs, the release PR itself shouldn't contain the changes. If we look at the history on main we will lose the individual units of work like custom events or whatever else is picked into it

[fadi-george]

Picks into main should be separate PRs, the release PR itself shouldn't contain the changes. If we look at the history on main we will lose the individual units of work like custom events or whatever else is picked into it

If our worry is losing the commits in this big pr then I can use regular merge commit.