Fix incorrect locale usage when message ID is not exist

[vjik]

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

[codecov[bot]]

Codecov Report

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

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

Additional details and impacted files

```diff @@ 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[bot]]

PR Summary

• Changelog Update

  • Documented a fixed bug (#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.