[FIX] calendar: keep recurring after edited one

Since 76b72429 if we have a recurring event with 3 occurences:

 [4th 4:00-4th 5:00] [14th 4:00-14th 5:00] [24th 4:00-24th 4:00]

And we detach the first one to modify it, then when getting the
info of reccurring events not detached the system get:

- starts: [14th 4:00] [24th 4:00]
- stops: [4th 5:00] [14th 5:00] [24th 5:00]

And wrongly apply the current filtering over:

 [14th 4:00-4th 5:00] [24th 4:00-14th 5:00]

So the issue hides recurrences of event wrongly if:

- they have not been detached
- they don't have a duration of 0
- one or several previous events have been detached
- the stop date of the nth previous event occurrence (nth equaling
  number of detached previous events) is not in the current filtering.

With this change, the stops are also filtered based on start of
occurrence + duration.

Without the change, the added test fails with:

 False != '155-20120301120100' : Last event should be found searching it by date range

note: for 10.0 up to not including 11.0 which is solved with #26901

opw-1866151
closes #26887