What problem are you trying to solve with Submitty
It would be helpful for peer graders to be able to see a progress bar that indicated how much of their assigned peer grading they have completed.

Describe the way you'd like to solve this problem
Reusing the preexisting progress bar format that is used for Peer Component Completion that TAs see, implement a progress bar visible to peer graders. For example, if a student is assigned 10 students to peer grade, and they fully grade 4 of them, a progress bar on the gradeable's grade button should be 40% full.

Additional context
PR#13006 - Peer Component Progress bar for TAs