Prevent Automatically Opening the File Explorer on the Upload Tab (filepicker)

I am working on an application customizer that will inject custom UI into the File Picker's Upload tab. Because of this, I want to prevent the file explorer from automatically opening when the user clicks on the Upload tab.

I’ve tried several methods to achieve this by manipulating the DOM through my custom code in the application customizer. I even tried removing  the "file" input element from my custom code. However, the file explorer still opens automatically when the user clicks on the Upload tab.

Is there any way to prevent this?