Unpublished staging event sends invite to user on workflow approval

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X, Master
• Fix Version/s: 7.0.0 DXP FP80, 7.0.10.11 DXP SP11, 7.0.X, 7.1.X, Master
• Component/s: Calendar, Staging, Workflow
• Labels:
  • QA-AUTOMATION
  • fw_code_review
  • fw_test_integration
  • fw_test_unit
  • liferay-dxp-70-sp11
  • liferay-fixpack-de-80-7010
  • pt-app-security-review
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/51655

Steps to Reproduce:

1. Add site and site page
2. Enable Local Live staging with Calendar selected
3. Go to staging site
4. Add calendar
5. Go to site Workflow Configuration
6. Choose "Single Approver" for calendar events
7. Go to staging site page
8. Add site event and invite Test Test user
9. Submit for Publication
10. Go to My Workflow Tasks
11. Approve event
12. Test Test's calendar

Expected Result:
Test Test calendar has not yet received an invite because the event is still unpublished through staging.

Actual Result:
Test Test calendar receives an invite before publication due to workflow approval. This can also create a duplicate event invite to Test Test when the site is Published to Live.