Only use QMacPasteboardMimeAny when the format is not supported natively

QMacPasteboardMimeAny is always included when copy/pasting which means it can end up covering for formats that are already available either due to what Qt already supports or for formats covered by the application which has registered its own handler for a mime type. Therefore we should consider only including this if it is for a format that Qt does not support specifically or provided by the application.

Since Qt 5 has long been out then the chances of this being needed due to compatibility with older Qt versions would be minimal at worse so excluding this type would at least mean it does not have "com.trolltech.anymime" included when it is not necessary.