Pass time frame directly into navigation builder

Otherwise, it will be inherited from the GET request, which can result in an undesired change when navigating two calendars on the same page, which is a case where the GET request may be from navigating a different calendar.

src/my-calendar-navigation.php

@@ -290,6 +290,7 @@ function mc_nav( $date, $format, $time, $show_months, $id, $site = false ) {
 				'month' => $prev['month'],
 				'dy'    => $prev['day'],
 				'cid'   => $id,
+				'time'  => $time,
 			),
 			array()
 		);
@@ -313,6 +314,7 @@ function mc_nav( $date, $format, $time, $show_months, $id, $site = false ) {
 				'month' => $next['month'],
 				'dy'    => $next['day'],
 				'cid'   => $id,
+				'time'  => $time,
 			),
 			array()
 		);