Exposed views date filter with offset not working as expected

I finally created this https://www.drupal.org/project/date_filter → to address this issue and many other.
Looks like issues like this have a very small chance to get enough attention and find their way into core so we have to handle that in contrib :(

Building on #44. Adding similar improvement as #38 but to the datetime filter in core datetime module.

Try fixing CCF.

Was previously tagged for tests and issue summary update which still need to happen plese.

Also please include interdiffs with patches.

Exactly same as #47, just re-rolled for 10.1.x

Hello,

I tried to apply patch on comment #50, but it's thrown an error in datetime module :

Warning: Undefined array key "type" in Drupal\datetime\Plugin\views\filter\Date->getOffset() (line 180 of core/modules/datetime/src/Plugin/views/filter/Date.php).

Without this warning, the patch works perfectly on Drupal 10.2.2!

Starting with #38, the patch always adds +1 day to any max value that does not explicitly contain a time.
While I understand the reason to do this on date values, I don't think it always makes sense on offset values.
For example "now" will become "now +1 day" (so tomorrow at the same time). But if I want my view to return results between some date and now, it will be confusing if it starts returning results from tomorrow.

Just a re-roll of #50 for 10.3.2

Hopefully, we need to address #51 and #52.

conflicts with #2842409: Selecting the same day in a date between filter returns no results →

Added new version of the patch against 10.3.2 where it adds support also for missing max value.

Patch based on 2982968-core-views-improve-date-filter-56.patch.
Just quick fix to make sure there are no warnings, otherwise AJAX reset button won't work, as it is throwing these annoying warning. :)