Multi-day non-all-day events should be displayed on middle day day views

Summary: Fixes T8192, Multi-day non-all-day events should be displayed on middle day day views

Test Plan: Create non-all-day event May 20 12pm - May23 12pm, open May 21 day view. Event should span the entire day.

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T8192

Differential Revision: https://secure.phabricator.com/D12835