Bug: Due date & scheduled dots missing from planner calendar

[AbigailDawson]

Summary

Nothing shows up on the mini calendar in the planner, even if action items with due dates are scheduled:

Steps to reproduce:

1. In the planner, schedule an action item for an issue with a due date.
2. Also try scheduling an action item that has its own due date.

In both cases the due date and scheduled dots don’t appear on the calendar.

[huly-github-staging]

Connected to Huly®: UBERF-9340