Event Times change to random times when Repeat is set

## What Happened
In Calendar, newly created events will change to incorrect event times after Repeat option is set.

## Expected Behavior
Event Time (Start/End) should not change when Repeat Option is set.

## Steps to Reproduce
1. Start Calendar, double click on a day to start new event
2. Specify Start and End Times for event
3. Turn "Repeat" ON
4. Click Create Event.
5. Event times will have changed to random times. Particularly, the hour will be an incorrect value.

### Logs

## Platform Information
Calendar 6.0.0
OS: elementary OS 6 Odin x86_64
Kernel: 5.11.0-27-generic
Packages: 1699 (dpkg), 20 (flatpak)
Shell: bash 5.0.17
Resolution: 3840x2160
DE: Pantheon
WM: Mutter(Gala)
Theme: io.elementary.stylesheet.blueberry [GTK3]
Icons: elementary [GTK3]
Terminal: io.elementary.t
CPU: Intel Xeon W3680 (12) @ 3.326GHz
GPU: NVIDIA GeForce GT 1030
Memory: 1370MiB / 24047MiB

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