[Queue-2.0] Currently enrolled/enqueue number in Capacity Session
# Summary <!--Describe the feature you are requesting here. Describe clearly what you want to have happen (differently). If possible, add screenshots to more clearly convey your request.--> The number of currently pending requests should be displayed in the capacity session to reflect how many people are contending for a spot in the session. # Reasoning <!--Describe which problem your request would solve and describe your reasoning behind wanting this feature.-->
issue