Changed PushNotificationIOS.getInitialNotification promise to return null | PushNotification as per the docs (#36876)
Changed PushNotificationIOS.getInitialNotification promise to return null | PushNotification as per the docs (#36876)


mcliment/DefinitelyTyped,dsebastien/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,dsebastien/DefinitelyTyped,markogresak/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped