CORE-5259: Corrected missed DataObject creation
Output argument types require a DataObject property to be added to them when they are created. This is the responsibility of the AppIntegrationPalette. A previous commit changed the outcome of the AppTemplateUtils.isDiskResourceArgumentType(..) method (CORE-5238).
Added AppIntegrationPalette unit test
This test only checks that DataObjects are created for FileOutput, FolderOutput, and MultiFileOutput argument types
CORE-5259