Multiple date editing tries to remove booking not belonging to the current user

[Anbcorp]

Hello,

It seems that editing multiple date does not perform proper checking about whose booking is edited.

Considering the following bookings:

• Foo has a booking for seat 1.3 on 2024-05-17 09:00-17:00
• Bar has a booking for the same seat, on 2024-05-20 09:00-17:00

In this configuration, if Bar tries to book any seat for both dates, the application tries to remove the booking of Foo, resulting in a "You don't have required permissions in the zone. (102)" error.

I believe this is the same bug as reported by #40

Thanks,