Build fails on non-macOS systems due to hardcoded PlistBuddy dependency

[aalrehn]

The KmpWorkManagerConfigTask fails on Linux and Windows systems because it unconditionally attempts to execute /usr/libexec/PlistBuddy, which is a macOS-only utility. This prevents the android apps from executing on non-mac machines.

Error :

> A problem occurred starting process 'command '/usr/libexec/PlistBuddy''

I believe this happens from this :

    @get:Input
    @get:Option(option = "iosAppInfoPlistPath", description = "Path to iOS App's Info.plist file")
    abstract val iosAppInfoPlistPath: Property<String>

 const val PLIST_BUDDY_PATH = "/usr/libexec/PlistBuddy"