fix: resolve deprecated nullable parameter typing for PHP 8.4 compatibility

[betooliveirawj]

This pull request makes minor improvements to type hinting in the Helper/Data.php file by updating method signatures to use nullable array syntax. This change increases code clarity and aligns with modern PHP standards.

• Type Hinting Improvements:
  • Updated the saveResultQuotes and getAdditionalInformation methods to use the nullable array type hint (?array) instead of accepting array|null. [1] [2]Title:

Description:

• In PHP 8.4, parameters typed as non-nullable (e.g. array) can no longer implicitly use = null, requiring the type to be explicitly declared as nullable (?array or array|null).

Checklist:

• Changes are consistent with the project's coding style.
• Documentation (if applicable) has been updated.
• Link to related issue (if applicable):

Testing Instructions:

• The module should continue working as-is after the fix, with the only change being the explicit declaration of nullable parameter types to ensure compatibility with PHP 8.4 and remove deprecation warnings.

PHPDOC: https://www.php.net/manual/en/migration84.deprecated.php?utm_source=chatgpt.com

fix: #43