Date Picker doesn't close after selecting date

[tyler-dane]

Prerequisites

• Using an up-to-date main branch

Expected Behavior

After selecting a date from the datepicker, the date picker should close and the selected date should appear in the date field

Current Behavior

After selecting a date from the datepicker, the date picker flashes and stays open

Steps to Reproduce

1. Click all-day row, which triggers event form to render

2. Click start or end date, which triggers date picker to render

3. Select a date from the datepicker

Possible Solution (Not obligatory)

I assume this is because we're re-rendering the form unnecessarily. Refactor the form/datepicker so that it doesn't need to rerender after changing the date

Context