fix deprecated on iOS 16 in swiftUI and iOS 16

let url = URL(string: videoUrl)!
let asset = AVAsset(url: url)
let duration = asset.duration
let durationTime = CMTimeGetSeconds(duration)
return Double(durationTime)

and I got 'duration' was deprecated in iOS 16.0: Use load(.duration) instead

I need someone to fix this warning.