Breadcrumb on goal detail page links to broken /goals page, doesn't link back to student

[mrabbitt]

To replicate:

1. Navigate to a goal detail page by clicking on a student, and then clicking on an existing goal. (The URL will be of the form: students/[student_id]/goals/[goal_id])
2. Note that the student ID in the breadcrumbs is not clickable and is an ID rather than the student's name.
3. Click on Goals segment of the breadcrumbs. This lands on a 404 page, with url /goals.

Expected behavior:

• The student ID segment of the breadcrumbs should show the student name instead of ID, and it should link back to the student page.
• The "Goals" segment of the breadcrumb should not be clickable as there is no "goals" page.

Screen.Recording.2024-08-27.at.4.41.56.PM.mp4