- Added a check in the `LanguagePickerTag` class to handle scenarios where the `languages` argument is provided but is empty.
- Implemented an early return in the `render` method to prevent rendering of the language dropdown HTML when the `languages` argument is empty.
- Modified the logic to check the processed `languagesArgString`, and if it is empty after trimming and processing, the method returns an empty string, avoiding the generation of an empty `<select>` element.
- Added additional debug statements to trace the flow of data, particularly the raw argument, resolved variable values, and extracted language codes.
- Ensured that the tag now fails silently and returns no content if the `languages` argument is missing or empty, thus avoiding potential issues with rendering an empty template.

This update improves the robustness of the `LanguagePickerTag` by ensuring it doesn't output incomplete or unintended HTML, enhancing the user experience and preventing rendering errors.

Co-authored-by: Jamie Thompson <[email protected]>