How can I hide the files included in a packaged App?

I'm trying to package an App to create a .mlappinstall file which contains several scripts, functions and also other UIFigures.

I'm wondering if it is possible to hide the "View File List" tab in the App description so that all the related files are not accessible.

This tab is shown when the App is already packaged, but maybe something can be done before the packaging of it.

Thank you in advance for every tip!