Steps to reproduce:

1. I setup a quiz with a 'Grade to pass' = 10, and then I turn on completion with these option is checked:
   Student must receive a grade to complete this activity
   Student must receive a passing grade to complete this activity
   2. As a student, I attempt the quiz and gain the grade = 9.
   =>the student receive a grade, but not a passing grade.
   3. As teacher, I change the setting of quiz, click on 'Unlock completion options' and update the 'Grade to pass' to 8
   => the student has receive a grade, and it's a passing grade. However, in the Activity Completion report, the student is FAIL the completion base on the report.

The root cause is that: we are using the old grade pass to calculate the completion of the activity.

We should using the new Grade to pass to calculate the completion of the activity.

 
Note: Due to MDL-52206 is not fixed on 3.11, I will update the code changes for 4.0 and master.