Fix update push endpoint immediately

[jkasten2]

Description

1 Line Summary

Fix issue where if there are subscription changes when a new tab is opened (before the 30 second new session) they are not sent until the next on_session will tigger.

Details

The root issue is session logic is different from the page vs SW logic.

• page - onSessionSent
• SW - timeSinceLastDeactivatedInSeconds <= sessionThresholdInSeconds

The path forward will probably be moving all player updates (and create) calls to the service worker so they can be made from one central location.

Systems Affected

• [ ] WebSDK
• [ ] Backend
• [ ] Dashboard

Validation

Tests

Info

Checklist

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

Programming Checklist Interfaces:

• [ ] Don't use default export
• [ ] New interfaces are in model files

Functions:

• [ ] Don't use default export
• [ ] All function signatures have return types
• [ ] Helpers should not access any data but rather be given the data to operate on.

Typescript:

• [ ] No Typescript warnings
• [ ] Avoid silencing null/undefined warnings with the exclamation point

Other:

• [ ] Iteration: refrain from using elem of array syntax. Prefer forEach or use map
• [ ] Avoid using global OneSignal accessor for context if possible. Instead, we can pass it to function/constructor so that we don't call OneSignal.context

Screenshots

Info

Checklist

• [ ] I have included screenshots/recordings of the intended results or explained why they are not needed

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Related Tickets

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This change is 

Fixes #715