core: Scheduler UI doesn't show entries for Sunday

The problem

Checks: OS: macOS Ventura Browsers: Safari, Chrome Notes: Other days are handled correctly, the issue only happens with Sunday

I created a schedule helper through the UI and selected the same time slot for all days, during this process Sunday fails to show the correct range as any clicks on the browser window remove the selected time slots.

Saving the schedule works, as validated by attempting to save over the overlapping time slots and the error message confirms the time slot already exists. The schedule triggers correctly, but it is not editable/visible in the frontend.

1. Schedule with the time slots selected

2. Adding a test time slot to a time I previously added to the schedule

3. Error message for overlapping times in the schedule

Video 1

This video shows me attempting to create a schedule on Sunday at 12:00, the time disappears after I click “save”. When I go back to edit the helper the time slot is not visible. Attempting to add the same time slot results in overlapping error.

https://user-images.githubusercontent.com/2916156/201246891-8afbeb92-0673-4c75-aba4-16d0f9e9fe6c.mp4

Video 2

This video shows me selecting a time slot on Sunday, adding a second time slot on a different day and the Sunday selection disappears. I go back and select Sunday again, hit save and I receive an error for overlapping time slots.

https://user-images.githubusercontent.com/2916156/201246947-ac37426e-65b8-432b-9c9e-c2d6b05a543a.mp4

What version of Home Assistant Core has the issue?

Home Assistant 2022.11.2

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant OS

Integration causing the issue

schedule

Link to integration documentation on our website

https://www.home-assistant.io/integrations/schedule/

Diagnostics information

No response

Example YAML snippet

No response

Anything in the logs that might be useful for us?

Logger: homeassistant.components.websocket_api.http.connection
Source: components/websocket_api/connection.py:104
Integration: Home Assistant WebSocket API (documentation, issues)
First occurred: 7:51:18 PM (1 occurrences)
Last logged: 7:51:18 PM

[281472857607664] Error handling message: Overlapping times found in schedule for dictionary value @ data['sunday']. Got [{'from': '17:30:00', 'to': '18:00:00'}, {'from': '18:00:00', 'to': '22:30:00'}, {'from': '17:30', 'to': '18:00'}] (invalid_format) from 192.168.1.90 (Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36)

Additional information

No response