docs: v2 cancelling seated booking as a host (#21744)

* docs: cancel seated bookings as attendee or host

* test: cancelling seated booking as host

docs/api-reference/v2/openapi.json

@@ -7321,7 +7321,7 @@
       "post": {
         "operationId": "BookingsController_2024_08_13_cancelBooking",
         "summary": "Cancel a booking",
-        "description": ":bookingUid can be :bookingUid of an usual booking, individual recurrence or recurring booking to cancel all recurrences.\n    For seated bookings to cancel one individual booking provide :bookingUid and :seatUid in the request body. For recurring seated bookings it is not possible to cancel all of them with 1 call\n    like with non-seated recurring bookings by providing recurring bookind uid - you have to cancel each recurrence booking by its bookingUid + seatUid.",
+        "description": ":bookingUid can be :bookingUid of an usual booking, individual recurrence or recurring booking to cancel all recurrences.\n    \n    \nCancelling seated bookings:\n    It is possible to cancel specific seat within a booking as an attendee or all of the seats as the host.\n    \n1. As an attendee - provide :bookingUid in the request URL `/bookings/:bookingUid/cancel` and seatUid in the request body `{\"seatUid\": \"123-123-123\"}` . This will remove this particular attendance from the booking.\n    \n2. As the host - host can cancel booking for all attendees aka for every seat. Provide :bookingUid in the request URL `/bookings/:bookingUid/cancel` and cancellationReason in the request body `{\"cancellationReason\": \"Will travel\"}` and `Authorization: Bearer token` request header where token is event type owner (host) credential. This will cancel the booking for all attendees.\n    \n    \nCancelling recurring seated bookings:\n    For recurring seated bookings it is not possible to cancel all of them with 1 call\n    like with non-seated recurring bookings by providing recurring bookind uid - you have to cancel each recurrence booking by its bookingUid + seatUid.",
         "parameters": [
           {
             "name": "cal-api-version",