feat: add passed_timestamp to CourseGrade and CourseGradeFactory

This update introduces a new field, passed_timestamp, to both CourseGrade and CourseGradeFactory classes, enhancing the tracking of grade status updates.

Author: Waleed-Mujahid

lms/djangoapps/grades/course_grade.py

@@ -30,6 +30,7 @@ def __init__(
         letter_grade=None,
         passed=False,
         force_update_subsections=False,
+        passed_timestamp=None,
         last_updated=None
     ):
         self.user = user
@@ -44,6 +45,9 @@ def __init__(
 
         self.last_updated = last_updated
 
+        # EDLYCUSTOM: this timestamp is used to mark a course as completed in edly panel via figures LCGM
+        self.passed_timestamp = passed_timestamp
+
     def __str__(self):
         return 'Course Grade: percent: {}, letter_grade: {}, passed: {}'.format(
             str(self.percent),

lms/djangoapps/grades/course_grade_factory.py

@@ -144,6 +144,7 @@ def _read(user, course_data):
             persistent_grade.percent_grade,
             persistent_grade.letter_grade,
             persistent_grade.letter_grade != '',
+            passed_timestamp=persistent_grade.passed_timestamp,
             last_updated=persistent_grade.modified
         )