fix(phpstan): update phive and refactor ERP Currency Handler

- Updated the version of phive to ^2.0.4 in the phars.xml file
- Refactored the ERP Currency Handler in the following ways:
  - Rearranged the argument order and types in createCurrency function
  - Removed unused languageData in createCurrency function
  - Updated createCurrency, deleteCurrency, updateCurrency to return void
  - Updated getDefaultCurrency to return Currency|null
  - Fixed getCurrency to handle `isset($currency['code'])`
  - Updated getCurrencies to handle `null | QUI\\Locale`
  - Standardized exception catch statements to `QUI\\Exception` without variable
  - Minor cleanups and formatting for increased readability