Render date field in scheduling tab as input field

Fixes #1374.

The start date field in the scheduling tab of the event modals
is rendering like a metadata field. This makes it look like it cannot
be edited. This changes it so that the date field always looks like an
input field, which is the way it was before.

Author: Arnei

src/components/events/partials/ModalTabsAndPages/EventDetailsSchedulingTab.tsx

@@ -305,7 +305,6 @@ const EventDetailsSchedulingTab = ({
 															yearDropdownItemNumber={2}
 															dateFormat="P"
 															popperClassName="datepicker-custom"
-															className="datepicker-custom-input"
 															wrapperClassName="datepicker-custom-wrapper"
 															locale={currentLanguage?.dateLocale}
 															strictParsing

src/components/events/partials/ModalTabsAndPages/NewSourcePage.tsx

@@ -422,7 +422,6 @@ const Schedule = <T extends {
 									yearDropdownItemNumber={2}
 									dateFormat="P"
 									popperClassName="datepicker-custom"
-									className="datepicker-custom-input"
 									wrapperClassName="datepicker-custom-wrapper"
 									locale={currentLanguage?.dateLocale}
 									strictParsing