fix: (CalDav) Delete invitation when deleting Calendars or Events

Signed-off-by: SebastianKrupinski <krupinskis05@gmail.com>

Author: SebastianKrupinski

apps/dav/lib/CalDAV/CalDavBackend.php

@@ -3556,7 +3556,7 @@ private function rowToSubscription($row, array $subscription): array {
 	 * @since 31.0.0
 	 *
 	 * @param int $calendarId
-	 * 
+	 *
 	 * @return void
 	 */
 	protected function purgeCalendarInvitations(int $calendarId): void {
@@ -3583,7 +3583,7 @@ protected function purgeCalendarInvitations(int $calendarId): void {
 	 * @since 31.0.0
 	 *
 	 * @param string $eventId UID of the event
-	 * 
+	 *
 	 * @return void
 	 */
 	protected function purgeObjectInvitations(string $eventId): void {