Issue Summary

When users create a project, the "Link existing work" field in the pop-up window is greyed out. Atlassian Home doesn't detect the Jira product as already enabled on the same site. 

Steps to Reproduce

1. Go to Atlassian home on a site where Jira is enabled
2. Click "Create a project" button

Expected Results

Users can select a Jira epic in the "Link existing work" field to create a project linked to that epic. 

Actual Results

The "Link existing work" field is greyed out and doesn't allow users to create a project from a Jira epic. 

Workaround

1. Create your first project even though the "Link existing work" field is greyed out
2. Go to that project and link a Jira issue on the project page under the "Where is work tracked?" section
3. Refresh the page

As soon as a first Jira epic is linked to a project, Jira syncs with Atlassian Home. Afterward, the prompt to enable Jira disappears from the "Create a project" window and users can create projects out of existing Jira epics.