Change `sendSelfNotification` to use local push

[rgomezp]

Description

1 Line Summary

Change the sendSelfNotification method to use local push functionality.

Systems Affected

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

Validation

• Call OneSignal.sendSelfNotification()
• See that the notification is shown

Testing

OneSignal.sendSelfNotification('Title', 'message', 'https://google.com', 'https://t3.ftcdn.net/jpg/03/08/73/34/360_F_308733458_QBzwMVu8ZzdGEp9Wwq1fAYaDgtP3UVwl.jpg', { test: 'foo' }, [{
    action: 'like-button',
    title: 'Like',
    icon: 'https://image.similarpng.com/very-thumbnail/2020/06/Icon-like-button-transparent-PNG.png'
}]);

Feature	Chrome	Firefox	Safari
Title	✅	❌	❌
Message	✅	❌	❌
Launch Url Click	✅	❌	❌
Data	✅	❌	❌
Button Displayed	✅	❌	❌
Buttons Displayed	✅	❌	❌
Button Click	✅	❌	❌

Checklist

• [ ] All the automated tests pass or I explained why that is not possible
• [x] 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:

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

Functions:

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

Typescript:

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

Other:

• [x] Iteration: refrain from using elem of array syntax. Prefer forEach or use map
• [x] 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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