Draft: Exclude launcher job APIs on Android

Nicolas Fellarequested to merge
work/nico/android-process into master

kcoreaddons!447 (merged) changed so that KProcess is no longer available on Android, which impacts KProcessRunner.

Since running processes that way usually isn't useful on Android exclude ApplicationLauncherJob, CommandLauncherJob, and some derivatives on Android.

OpenUrlJob is kept because that can conceptually work

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