[Bug]: Load translations fails when language-only code is used

[alexcmoss]

Expected Behavior

• Application provides complete language code (e.g. en-US)
• cookieconsent is configured with language-only code (e.g. en)
• getAvailableLanguage() returns language-only code
• loadTranslationData() uses language-only code

Current Behavior

• Application provides complete language code (e.g. en-US)
• cookieconsent is configured with language-only code (e.g. en)
• getAvailableLanguage() returns language-only code
• loadTranslationData() attempts to use complete language code and fails with error Could not load translation for the 'en-US' language

Steps to reproduce

• configure cookieconsent with language en
• call setLanguage('en-US')

Proposed fix or additional info.

    let currentLanguageCode = getAvailableLanguage(desiredLanguageCode)
        ? desiredLanguageCode
        : getCurrentLanguageCode();

should be

    let currettLanguageCode = getAvailableLanguage(desiredLanguageCode) ?? getCurrentLanguageCode();

Version

3.1.0

On which browser do you see the issue?

No response