User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0

Steps to reproduce:

Issue No. 1

1. Create new calendar
2. Select network calendar
3. Enter username and caldav location
4. Select properties of the desired calendar and check Read Only

Issue No. 2

1. Select properties for an existing caldav calendar
2. Enable Read Only
3. Restart Thunderbird

Actual results:

For Issue No. 1, when the calendar is initially setup, read only is NOT enabled.

For Issue No. 2, after restarting Thunderbird, the read only option is removed. Pass notifications are then triggered (because the calendar is no longer read only) which cannot be dismissed.

Expected results:

Issue No. 1 should setup the calendar as read only with a lock showing in the UI. Pass notification should NOT trigger an alert because the calendar is read only.

Issue No. 2, the calendar should remain in read only at restart with the lock showing in the UI. Pass alert should not be displayed at restart because the calendar is read only.