Fix backward-compatability for new method in CRM_Contact_BAO_Query_Hook #22938
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Overview
Backports #22933 to 5.47
Technical Details
The method getDefaultReturnProperties was just added to CRM_Contact_BAO_Query_Hook,
but some extensions do not yet implement it, and also do not extend that class so
cannot inherit the default method.
This adds a guard around calling the new method to avoid crashes.