fix(fancy): fallback whenIntl is unavailable

[gcaaa31928]

Added a fallback to handle cases where Intl isn’t available. This keeps things running smoothly even in environments without Intl support. For more details, check out the Node.js docs on detecting internationalization support.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 20.79%. Comparing base (24c98ce) to head (7fda533).
Report is 31 commits behind head on main.

Files with missing lines	Patch %	Lines
src/reporters/fancy.ts	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #326       +/-   ##
===========================================
- Coverage   61.08%   20.79%   -40.30%     
===========================================
  Files          13       43       +30     
  Lines        1380     2318      +938     
  Branches       58       88       +30     
===========================================
- Hits          843      482      -361     
- Misses        537     1808     +1271     
- Partials        0       28       +28     

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