fix promotion

MavenChess/MavenChess/src/main/java/view/BoardView.java

@@ -192,6 +192,9 @@ public class BoardView {
 						// Promotion to Queen (by default, Queen for now)
 						board.mutationOfSelectedPiece(Board.QUEEN); // (on model)
 						mutationPiece(model, selected, Custom3dModel.QUEEN); // (on view)
+						// --- MOVE (while doing promotion)  ---
+						board.movePiece(selected, arrival); // move piece (on model)
+						movePiece(selected, arrival); // move piece (on 3d view)
 					}
 					// --- PRISE EN PASSANT ---
 					else {