Fix shift crafting (#6433)

This field was added to the action in 1.21.20. Previously, the client would behave as if clicking the crafting result slot many times. Now it behaves more like recipe book shift-clicking.

src/network/mcpe/handler/ItemStackRequestExecutor.php

@@ -343,7 +343,7 @@ protected function processItemStackRequestAction(ItemStackRequestAction $action)
 					$this->setNextCreatedItem($window->getOutput($optionId));
 				}
 			}else{
-				$this->beginCrafting($action->getRecipeId(), 1);
+				$this->beginCrafting($action->getRecipeId(), $action->getRepetitions());
 			}
 		}elseif($action instanceof CraftRecipeAutoStackRequestAction){
 			$this->beginCrafting($action->getRecipeId(), $action->getRepetitions());