Manually call App Intent from main app target

I would like to call my App Intent directly from my main app target, in an effort to start a live activity in the background when I receive a silent push notification from the server.

I have seen in one of the WWDC developer lounges on Slack that this should be possible. Here is how I tried doing it: (it was recommended like that in the lounge)

let appIntent = LiveActivityRefreshIntent()
Task {
    try await appIntent()
}

But I get a compiler error: Instance method 'callAsFunction(donate:)' requires the types '(some IntentResult).Value' and 'Never' be equivalent

It's strange because as far as I can tell, I cannot declare my perform method as returning Never. Here is the signature and return value of my App Intent's perform method:

func perform() async throws -> some IntentResult {
        LiveActivityController.shared.updateLiveActivities()
        return .result()
}

Is there still a way to call the app intent from my code? If so, how?