Fix bug in AbstractCmisObject where properties are not initialized
Fix bug in AbstractCmisObject where properties are not initialized

Summary:
In the `AbstractCmisObject` given propertíes are not initialized
if no secondary type was defined.

Reviewers: #[t]_forgetit-dev, dkd-ebert

Reviewed By: #[t]_forgetit-dev, dkd-ebert

Differential Revision: https://phabricator.dkd.de/D1256

dkd/php-cmis-client