DesktopHelper: Cond-compile out process creation on iOS

[fwcd]

Forking is not supported on iOS, so we'll emit a warning instead.

[daschuer]

Will this feature ever of showing a file in "finder" ever be available? What is equivalent for the use case? Or can we remove the feature entirely on iOS?

[fwcd]

I'm not sure what the precise API is, but I think there might be a way to deep link into the iOS files app (the native file browser on iOS, which only presents a small view of the file system, namely the user's documents and app sandboxes).

Edit: Looks like shareddocuments://<path to file> URIs might be able to do that:

• https://stackoverflow.com/questions/46499842/open-ios-11-files-app-via-url-scheme-or-some-other-way
• https://www.reddit.com/r/shortcuts/comments/125rxuc/ios_ipados_164_broken_shareddocuments_links/

[daschuer]

LGTM, Thank you.