Well, I managed to find some time this evening. The referred issued did not solve our needs. A modification providing the date as a date format to the view is required.
I am also interested in this. However, wouldn't compatibility be an issue for the Webform Views Integration module? As it is really that module that presents the webform fields so they are available in views?
I have looked into the following issue related to that module
https://www.drupal.org/project/webform_views/issues/3321326
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Missing filters for DateTime element type
Fixed
("Missing filters for DateTime element type")
But I am not skilled enough in PHP to be able to understand whether it solves our problem or not as well? I do think there are somewhat more to do? I will test that code when I have time to do so, probably next week.
This patch solved it for me
https://www.drupal.org/project/calendar/issues/3217106 →
I had a problem that seems to be exactly the same.