Display the user's joined date in the format of year, month, and day.

• The words for day, month, and year have been corrected.
• Abbreviations for day, month, and year have been added.
• The day cycle has been checked.
• Composer and Carbon packages have been removed.
• Time operations are now performed using the PHP datetime class.
• File size has been reduced from 3MB to 16KB.
• A timestamp has been added to the user registration time, displaying the date of registration.

NOTE: The plugin can be updated in this manner, and your question will work, but "composer" and other packages (such as Carbon, etc.) will continue to be installed. It is recommended to completely uninstall and reinstall the plugin.