Fix DST change causing getWeekViewEventSpan to return wrong span

[nmihaylov543]

DST time change was causing the hour of the end date to end up after the iterator's hour. That was resulting in one more iteration in the while loop.

Added tests for the exact case as well

[mattlewis92]

LGTM, thanks!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (b07c733) to head (e656f69).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #54   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            6         6           
  Lines          494       498    +4     
  Branches        95        96    +1     
=========================================
+ Hits           494       498    +4     

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