[SG-870] Android notification not showing when app is killed

[andrebispo5]

Type of change

• Bug fix
• New feature development
• Tech debt (refactoring, code cleanup, dependency upgrades, etc)
• Build/deploy pipeline (DevOps)
• Other

Objective

If the user receives a passwordless login request and the application is not running on foreground or background the notification will not be shown.
This is due to an if condition to check if there is already a login request modal being presented to the user.

Code changes

Added null check on App.Current. This is null when the app is killed.

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