Update working days calculation

[KJhellico]

Proposed change

Update working days calculation (if there is substituted holidays from another year) .
Close #2196.

Type of change

• New country/market holidays support (thank you!)
• Supported country/market holidays update (calendar discrepancy fix, localization)
• Existing code/documentation/test/process quality improvement (best practice, cleanup, refactoring, optimization)
• Dependency update (version deprecation/pin/upgrade)
• Bugfix (non-breaking change which fixes an issue)
• Breaking change (a code change causing existing functionality to break)
• New feature (new holidays functionality in general)

Checklist

• I've followed the contributing guidelines
• I've successfully run make check, all checks and tests are green

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (301185b) to head (ab08c1a).
Report is 1 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff            @@
##               dev     #2197   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          195       195           
  Lines        11755     11763    +8     
  Branches      1697      1700    +3     
=========================================
+ Hits         11755     11763    +8     

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

[PPsyrius]

LGTM

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[arkid15r]

@KJhellico I've updated the code as per your request.
Please review the changes when you get a chance.

[arkid15r]

Adding to the queue.
@PPsyrius please review when you get a chance.

[PPsyrius]

LGTM