Restore Malaysia's 3-letter code as subdivisions aliases

PPsyrius commented 1 month ago

Proposed change

Restores Malaysia's 3-letter code (previously list as deprecated) as alternative subdivision aliases, as done for Austria's implementation in #1662 .

Type of change

[ ] New country/market holidays support (thank you!)
[x] 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 python-holidays functionality in general)

Checklist

[x] I've followed the contributing guidelines
[x] I've run make pre-commit, it didn't generate any changes
[x] I've run make test, all tests passed locally

codecov[bot] commented 1 month ago

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 100.00%. Comparing base (af428f3) to head (cd0fa23). Report is 4 commits behind head on dev.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## dev #1946 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 187 187 Lines 11397 11394 -3 Branches 1800 1800 ========================================= - Hits 11397 11394 -3 ```

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