[JIRAALIGN-1207] Parent Objective field is not included in the Objective List export

Issue Summary

On the objective slide-out, the Parent Objective is a editable field. However, when the Objective List is exported, the Parent Objective field is not included in the export.

Steps to Reproduce

1. Log in to Jira Align
2. Navigate to https://<jira align URL>/MilestoneGrid
3. Click on some objectives and assign Parent Objectives to them, if they don't have one already.
4. Save the changes on each objective.
5. While on the the Objective grid, click "More Actions -> Export"
6. Download and open the resulting export

Expected Results

The resulting Export should have an available Parent Objectives column

Actual Results

No column exists in the Export file for Parent Objectives.

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available