fix: Fix patch for nextScheduledDate in PS [DHIS2-20042]

Author: enricocolasante

dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/metadata/objectbundle/hooks/ProgramStageObjectBundleHook.java

@@ -69,7 +69,8 @@ public void validate(
                   DataElement.class,
                   programStage.getNextScheduleDate().getUid());
 
-      if (!programStage.getDataElements().contains(programStage.getNextScheduleDate())
+      if (programStage.getDataElements().stream()
+              .noneMatch(de -> de.getUid().equals(programStage.getNextScheduleDate().getUid()))
           || nextScheduleDate == null
           || !nextScheduleDate.getValueType().equals(ValueType.DATE)) {
         addReports.accept(