Fixes openemr#7001 Bulk FHIR 500 error patient ids (openemr#7004)

Provenance was relying on patient ids for patient/$export and
system/$export operation.  This should resolve that issue.

src/Services/FHIR/FhirProvenanceService.php

@@ -473,7 +473,10 @@ public function export(ExportStreamWriter $writer, ExportJob $job, $lastResource
 
         $servicesByResource = $this->serviceLocator->findServices(IResourceUSCIGProfileService::class);
 
-        $patientUuids = $job->getPatientUuidsToExport();
+        $patientUuids = [];
+        if ($type == ExportJob::EXPORT_OPERATION_GROUP) {
+            $patientUuids = $job->getPatientUuidsToExport();
+        }
 
         foreach ($job->getResources() as $resource) {
             $searchParams = [];