Resolve "Queue doesn't display group number for individual (single person) in Submit group"

What does this mr do?

If a person is the only one in a group with a capacity bigger than 1, when they enqueue, the group number is now still displayed in the request.

Screenshots

before

after

Does this MR meet the acceptance criteria?

• I have added a changelog entry to reflect the significant changes I made.
• Tests were created to test the feature.
• I have updated the documentation accordingly.
• I adhere to the style guide.