Fix filter scope passed in latest submissions method

[yash-learner]

Describe the bug
Wrong scope is passed in student_details_resolver and student_presenter latest_submissions method.

targets scope is passed instead of assignments

It was missed in update of scope in this #1605

To Reproduce
Steps to reproduce the behavior:

1. Create a course with assignments
2. Complete all the assignments
3. Archive an assignment for a target - by selecting no for Does this target have an assignment?
4. You should notice the miss match in percentage completed in student report - It shows more percentage for completion because of the timeline_events completed scope is getting course_targets instead of targets_with_assignments.

Expected behavior
Pass the correct scope