Calendar Events marked "All Day" do not update with change of Time Zone

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X, 7.1.X, 7.2.X, Master
• Fix Version/s: 7.0.0 DXP FP89, 7.0.10.13 DXP SP13, 7.0.X, 7.1.10 DXP FP16, 7.1.X, 7.2.10 DXP FP4, 7.2.X, 7.3.0 CE GA1, 7.3.10 DXP GA1, Master
• Component/s: Calendar
• Labels:
  • QA-V
  • ee-ts
  • liferay-dxp-70-sp13
  • liferay-fixpack-de-89-7010
  • liferay-fixpack-dxp-16-7110
  • liferay-fixpack-dxp-4-7210
• Branch Version/s:
  7.2.x, 7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Story Points: 0.25
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/81402

Steps to Reproduce:
1. Start Liferay and log in as Admin user
2. Navigate to Control Panel -> Users -> Users and Organizations -> edit Admin user
3. Click on Preferences tab, then Display Settings
4. Change the time zone of the user to (UTC+05:30) India Standard Time and Save
5. Add a Calendar portlet to a page
6. Create a new event and mark it as "All Day"
7. Create a second event on the same day and start it at 1:00 AM for a 1-hour duration
8. View the events on the calendar
9. Go back to the Admin user and change the time zone to (UTC-04:00) Eastern Daylight Time
10. View the events in the calendar

Expected Results:
Both events would shift 9.5 hours earlier on calendar

Actual Results:
Event 1 (all day event) stayed on same day and original times (12:00 AM start, 11:59 PM end)
Event 2 shifted 9.5 hours earlier