Data-only notifications should not show empty notifications

[callaars]

As described in this issue #684 notifications are displayed as empty notifications in Android when no title and body is set.

This PR mitigates that by not creating a notification if both are not available.

I couldn't find a CONTRIBUTING file so I'm just pushing this as a PR. Let me know if something is off or needs fixing. I've tested this, obviously, and it works as intended.

[callaars]

cc @VitalyArt / @yogevbd

[stale]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[callaars]

You are stale.

[anatooly]

At current last version
"react-native-notifications": "^4.1.2",

I don't see push text. Only application title & empty body,
samsung a30, android 11
in iOS all correct

[stale]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

The issue has been closed for inactivity.

[artdevgame]

This PR is not stale. I'm experiencing the same issue. Please can a contributor help get this work merged.

[callaars]

It's definitely still happening.

[artdevgame]

@DanielEliraz Can I bring your attention to this fix too please?

[DanielEliraz]

OK, accepting! thanks @callaars!

[DanielEliraz]

@callaars replaced it with a new PR, thanks man