TRACK-190: fix setting event actual when previous event deleted

[tom0827]

https://eao-dst.atlassian.net/jira/software/c/projects/TRACK/boards/10?selectedIssue=TRACK-190

When event actual date is set we perform checks to see if previous events actual date are set. Fixed bug where we were checking previous event actual date was set even if the event had been deleted

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Please upload report for BASE (develop@abcea80). Learn more about missing BASE report.

Additional details and impacted files

@@            Coverage Diff             @@
##             develop    #2411   +/-   ##
==========================================
  Coverage           ?   77.82%           
==========================================
  Files              ?      293           
  Lines              ?     9808           
  Branches           ?        0           
==========================================
  Hits               ?     7633           
  Misses             ?     2175           
  Partials           ?        0           

Flag	Coverage Δ
epictrack-api	77.82% <ø> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.