feat: split booking between participants and applicant

addresses #869f2q1vu

src/Service/BookingEditPreFlightChecker.php

@@ -83,7 +83,7 @@ class BookingEditPreFlightChecker
             }
         }
 
-        if (false === $bookingDto->isInternalAgencyBooking() && true === $participant->isApplicant()) {
+        if (true === $bookingDto->isFirstParticipantApplicant() && true === $participant->isApplicant()) {
             foreach ($this->getMissingValueAddressLabels($participant) as $valueLabel) {
                 $valueLabels[] = $valueLabel;
             }