incorrect slot length when changing event type length and then rescheduling it

[supalarry]

1. Create an event type with length 15 minutes and then create a booking.
2. Change event type length to 60 minutes and try to reschedule it.
3. The slots length on the right side are still 15 minutes:

So this is a problem when event type length changes between booking and rescheduling.

[linear]

CAL-6307 incorrect slot length when changing event type length and then rescheduling it

[bandhan-majumder]

@supalarry
Can i start working on it? or you are going to work on it yourself?