Update the Philippines holidays: add en_PH, en_US, fil, th localization

[PPsyrius]

Proposed change

• Adds en_PH, en_US, fil, th localization for the Philippines holidays.
• Update and Refractor test cases so that the end year is now 2050 like other entries.
• "Ninoy Aquino Day" is now only added from 2004 onwards.

I'm not satisfied with Filipino/Tagalog localization myself, so any double-checks would be appreciated here i.e. I can't find proper words for Additional special (non-working) day since even local news use the English term as-is.

Edit 1: Some additional comments from a Filipino friend:

The last two entries ("Additional special (non-working) day" and "Elections special (non-working) day") can be translated to "Karagdagang Espesyal na Araw (Walang Trabajo)" and "Araw ng Halalan (Walang Trabajo)" respectively but that's awkward for me that is as the last two are normally written and said in English in all documentation.

Closes #2067 .

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 run make pre-commit, it didn't generate any changes
• I've run make test, all tests passed locally

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (8b546a8) to head (51f8af7).
Report is 1 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff            @@
##               dev     #2093   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          191       191           
  Lines        11549     11561   +12     
  Branches      1736      1739    +3     
=========================================
+ Hits         11549     11561   +12     

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

[KJhellico]

New localization 👍

[PPsyrius]

Looks like the new 2025 entries got announced as soon as I get to implement code review suggestions lol.

EDSA appears to be moved to WORKDAY category instead from 2025 onwards.

Also, Chinese New Year is mistakenly listed as Jan 9 instead of Jan 29 in the Philippines Public Holidays official list I think? I'll keep it as Jan 29 for now. The direct source appears to be correct

[KJhellico]

LGTM!

[arkid15r]

Great stuff, huge PH improvement. I'm not sure about their languages though:

[KJhellico]

Meantime, in the Philippines: declaring Sunday, July 27, 2025, as a public holiday (special non-working day). 😉

BTW, it's special working holiday since 2009.

[sonarcloud]

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 SonarCloud

[arkid15r]

🇵🇭 LGTM