WFM should allow viewing of reports for exams that have the approval_dttm in CPACS as NULL

Issue is related to when in CPACS db the approval_dttm=NULL this will cause issue with WFM not able to view the report in the diagnostic hub when the exam is opened as primary.

Other products such as Universal Viewer, ZFP and RA1000 do not care if the approval_dttm is NULL and will allow the users to view the examination report. However WFM as per the current code design will not display the report in the diagnostic hub if the approval_dttm is NULL.

The only workaround is to open a different exam from the patient and then select the exam that has the issue as a prior from the patient history and then the report is viewable.

Request is to have WFM funtion like the other products and allow the report that has the approval_dttm as NULL to be viewed in WFM.