Student: UI: Checkmark or some other indicator to display when a section (eg. Program, Personal Information) is completed

**User Story**
As a _student user_, **I want** to have an indicator to show that when I have completed a section **so that** I know what I have completed and what I have left to do. Especially if I have saved the draft and returned to the application at a later time.

### **Acceptance Criteria**
- [ ] Add a checkmark or some type of indicator on the tabs

- Program
- Personal Information
- Family Information
- Partner Information
- Financial Information
- Confirm Submission

**Additional context**
Ref. GDX Discovery Feedback Figma: For your consideration

No files or tests are named. Start by locating the student application tabs for Program, Personal Information, Family Information, Partner Information, Financial Information, and Confirm Submission, then trace how saved section completion is represented. Done means each tab displays a checkmark or other indicator when its section is complete, including after returning to a saved draft.

Written by the indexing model from the issue text.