[Feature] 13665 date time format not respected

[``* `#13665` Date/Time format not respected``](https://www.openproject.org/work_packages/13665)
[``* `#13664` Timezone not respected``](https://www.openproject.org/work_packages/13664)
@tilt I set the the ``replace`` property of the ``dateTime`` directive to ``true``. I hope that solves this issue?