Bot users for groups are shown taking up a billable seat

Summary

According to the documentation bot users for groups and projects should not take up a seat. Group -> Settings -> Usage Quotas shows bot users taking up a seat.

This appears to only be an issue for gitlab.com. In self managed instances it appears that the users are not taking up a seat.

Steps to reproduce

1. In a gitlab.com group with premium license or higher navigate to Settings -> Usage Quotas and make note of how many users there are.
2. Navigate to Settings -> Access tokens and create an access token
3. Navigate back to Settings -> Usage Quotas. The Users occupying seats in <group name> Group will have increased

What is the current bug behavior?

Bot users for groups take up a billable seat

What is the expected correct behavior?

Bot users for groups should not take up a billable seat

Relevant logs and/or screenshots

Before adding group access token	After adding group access token

Possible fixes