WPML Fix: Switching language throws error on translated courses dashboard

[Anindra123]

• Translated course if enrolled shows on both main dashboard and other language dashboard when language is switched, but since there is no course progress it was throwing error as the $result returned is 0 on get_course_completed_percent and it does not find the key completed_percent, to fix this i have checked if result is 0 and is get_stat is called then return the default stats array with all key value being 0

• Another issue was in get_enrolled_courses_by_user if the post id is not matched , the new_array remains empty and this modifies the WP_Query->posts array and the the_post() call returns null which is throwing error, to fix this i have checked if the new_array is empty so that it does not modify the posts array with empty array

https://app.clickup.com/t/9018365849/z8zyy1c5p2