fix: clear inquiry status on room reselection

src/Form/Model/BookingDto.php

@@ -58,6 +58,15 @@ class BookingDto
      */
     public string $bookingStatus = 'F';
 
+    /**
+     * Booking status the travel itself calls for when the booking starts, before any room is
+     * selected and before the create-flow status rules run. Step 1 falls back to it whenever
+     * no on-request room is selected, so the status can move back from 'A'.
+     *
+     * Null in sessions started before it was introduced.
+     */
+    public ?string $initialBookingStatus = null;
+
     /**
      * Reference to booking entity (only populated in edit mode).
      */