Fix incorrect locale usage when message ID is not exist

[vjik]

Q	A
Is bugfix?	✔️
New feature?	❌
Breaks BC?	❌
Fixed issues	-

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.35%. Comparing base (ee746d9) to head (fc177d8).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #132   +/-   ##
=========================================
  Coverage     99.34%   99.35%           
- Complexity      110      111    +1     
=========================================
  Files            13       13           
  Lines           306      308    +2     
=========================================
+ Hits            304      306    +2     
  Misses            2        2           

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[what-the-diff]

PR Summary

• Changelog Update

  • Documented a fixed bug (Fix incorrect locale usage when message ID is not exist #132) that was causing incorrect language settings when using a message ID that didn't exist.

• Method Enhancement in Translator.php

  • Simplified the translation process by optimizing the translateUsingCategorySources method. This should result in smoother and more reliable translations.

• Unit Testing Improvements in TranslatorTest.php

  • Expanded the unit test coverage by adding a new test method and various scenarios for it in testDefaultMessageFormatterWithoutId.
  • Enhanced the accuracy of an existing test case by using a more realistic message for translation.