fix wrong auto-detection of country by language

[asolntsev]

When give Locale contains only language, but not country, the phone generator tries to guess the country.

For few specific languages, the guess was wrong. It happened for languages which code occasionally matches some other country's code.

new Faker(new Locale("am").phoneNumber(); // generated Armenian phone instead of Ethiopian

new Faker(new Locale("ar").phoneNumber(); // generated Argentina phone instead of Saudi Arabia

etc.

Ideally, users should always provide locale with country:

  String phoneNumber = new Faker(new Locale("am_ET").phoneNumber();

But at least we don't predict the wrong country anymore.

Inspired by #1788

[what-the-diff]

PR Summary

• Enhanced Language Support in PhoneNumber Method
  The detectCountryByLanguage method in the phone number functionality has been updated. New mappings have been added for several languages including Afrikaans, Arabic, Amharic, Bengali, and others to correspond to the correct country codes. Existing mappings have also been refined for more accurate results. This change provides greater language support and ensures the accuracy of country codes associated with various languages.

• Additional Testing for PhoneNumberValidityFinder
  A new test method named detectsCountryByLanguage has been introduced to verify the correct return of country codes for different languages. The test uses pairs of languages and countries to check the efficiency and correctness of the language-to-country mapping feature. This has resulted in a significant improvement in the coverage of our tests for this functionality.

[codecov-commenter]

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Codecov Report

❌ Patch coverage is 73.07692% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 92.17%. Comparing base (4117c61) to head (8b576e6).

Files with missing lines	Patch %	Lines
...java/net/datafaker/providers/base/PhoneNumber.java	73.07%	7 Missing ⚠️
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Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1791      +/-   ##
============================================
- Coverage     92.34%   92.17%   -0.17%     
- Complexity     3447     3456       +9     
============================================
  Files           339      339              
  Lines          6794     6813      +19     
  Branches        670      670              
============================================
+ Hits           6274     6280       +6     
- Misses          354      364      +10     
- Partials        166      169       +3     

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[kingthorin]

LGTM