[JIRAALIGN-2065] Roadmap: Epic by Theme Item Completed Doesn't Show an Accurate Count of Completed Children Items

Issue Summary

When on the Roadmap viewing Epic By Theme, the Items Complete for each epic are not being shown.

Steps to Reproduce

1. Step 1 - Navigate to Jira Align Roadmap View
2. Step 2 - Ensure that you have all the prerequisites configured to see a full Epic by them a hierarchy
3. Step 3 - Next ensure there completed children under an Epic (Capabilities or Features we need to consider both)
4. Step 4 - Next set your view to Epic by Theme
5. Step 5 - Next enable the column under extra configuration to show "Completed Items"

Expected Results

We should show the corresponding completed children for each Epic on this view in the "Completed Items" column.

Actual Results

Users are seeing 0 completed items

Workaround

No workaround at this time