Unauthorized access to Projects Dashboard shows 404 instead of Access Denied

**Describe the bug**
When an unauthorized user tries to access the Projects Dashboard, the application returns a 404 Not Found response instead of an Access Denied page

**To Reproduce**
Steps to reproduce the behavior:

1. Log in as a user without access to the Projects Dashboard.
2. Open the URL:
`http://localhost:3000/projects/dashboard`
3. The application shows a 404 Not Found page.

**Expected behavior**
The user should see an Access Denied page, just like what is currently shown on:
`http://localhost:3000/my/mentorship`

**Are you going to work on fixing this?**

- [x] Yes
- [ ] No

**Screenshots**