Kanban team shows sum of individual team member weekly hours

Issue Summary

Kanban teams show a sum of individual team member weekly hours rather than the default 200 when left empty.

Steps to Reproduce

1. Create a Kanban team
2. Leave the Capacity (weekly hours) empty
3. Add 2 members
4. Save

Expected Results

The Capacity should display 200 weekly hours since that is the default when left empty.

Actual Results

The Capacity displays a sum of 40 weekly hours per team member instead of the default 200. Despite this, the Plan's auto-scheduling is still done using 200 weekly hours as its source.

Workaround

Manually add the weekly hours to the weekly Capacity to the appropriate value.