Refactor Requests controller: too many instance variables

[stefannibrasil]

Summary

In #5543, I added one more variable there. I didn't want to refactor the controller since the PR was already too big and it's a good practice to refactor in a separate stream of work.

Things to consider

Since the variables are for the views, we can use a view object instead to keep the controller cleaner.

Criteria for Completion

• Everything works as before
• Controller is cleaner

[stefannibrasil]

I can work on this 👋🏼