Change the sendSelfNotification method to use local push functionality

[rgomezp]

Description

1 Line Summary

Change the sendSelfNotification method to use local push functionality.

Systems Affected

• 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 Windows	Firefox Mac	Safari
Welcome Notification	✅	✅	✅	❌
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
• 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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