SFSafariViewController Browsing Word doc using iOS 13.0

We are trying to use SFSafariViewController to browse a Word document from our iOS Mobile app using Swift as it gives ReaderView and Font Increase/Decrease within the App. Everything works as expected on the Simulator with 12.2 ios version, however when we published the changes to TestFlight and started using the app on a real phone ios 13.0 version the SFSafariViewController shows the FileName and says "Open in 'Dropbox' 'More... '"

https://i.stack.imgur.com/R595d.jpg

we want to disable/remove that option to choose different apps to open the word/pdf docs and display them directly within the app. Would greatly appreciate if someone can help remove this option and directly display the documents like below.

https://i.stack.imgur.com/EhFec.png

Can someone please help how to resolve this issue?

func openGuidelineSafari(passedURL: String) {
       
        let allowedCharacterSet = CharacterSet(charactersIn: " ").inverted
        let escapedString = passedURL.addingPercentEncoding(withAllowedCharacters: allowedCharacterSet)
        let url = URL (string: (escapedString!))
       
        let config = SFSafariViewController.Configuration()
        config.entersReaderIfAvailable = true
       
        let vc = SFSafariViewController(url:url!, configuration: config)
        vc.delegate = self
        present(vc, animated: true)
    }