* Fix#28104 - CalDav support for floating datetimes
Timzones are optional in CalDav
It is possible that an entry contains neither a TZID, nor is an UTC time.
When this is the case, it should be treated as a floating date-time value,
which represent the same hour, minute, and second value regardless of which
time zone is currently being observed.
For Home-Assistant the correct timezone therefore is whatever is configured
as local time in the settings.
See https://www.kanzaki.com/docs/ical/dateTime.html
* Revert "Fix #28104 - CalDav support for floating datetimes"
This reverts commit cf32a6e390.
* add test case: floating events fail with error without patch
* Fix#28104 - CalDav support for floating datetimes
Timzones are optional in CalDav
It is possible that an entry contains neither a TZID, nor is an UTC time.
When this is the case, it should be treated as a floating date-time value,
which represent the same hour, minute, and second value regardless of which
time zone is currently being observed.
For Home-Assistant the correct timezone therefore is whatever is configured
as local time in the settings.
See https://www.kanzaki.com/docs/ical/dateTime.html
* style fix
65263bdef9