refactor(bukkit): 优化物品操作反射机制

- 使用 Reflections 类中已有的 method$NonNullList$set 方法替代动态获取的 set 方法
- 移除冗余的异常捕获 NoSuchMethodException- 新增 NonNullList 相关的类和方法引用

bukkit/src/main/java/net/momirealms/craftengine/bukkit/util/ItemUtils.java

@@ -25,10 +25,9 @@ public class ItemUtils {
                     .get(nmsInventory$getInventory);
             Object nmsItemStack = Reflections.method$CraftItemStack$asNMSCopy
                     .invoke(null, itemStack);
-            nmsInventory$items.getClass()
-                    .getMethod("set", int.class, Object.class)
+            Reflections.method$NonNullList$set
                     .invoke(nmsInventory$items, slot, nmsItemStack);
-        } catch (InvocationTargetException | IllegalAccessException | NoSuchMethodException e) {
+        } catch (InvocationTargetException | IllegalAccessException e) {
             CraftEngine.instance().logger().warn("Failed to set item", e);
         }
     }

bukkit/src/main/java/net/momirealms/craftengine/bukkit/util/Reflections.java

@@ -3916,4 +3916,19 @@ public class Reflections {
                     INVENTORY$ITEMS
             )
     );
+
+    public static final Class<?> clazz$NonNullList = requireNonNull(
+            ReflectionUtils.getClazz(
+                    BukkitReflectionUtils.assembleMCClass("core.NonNullList")
+            )
+    );
+
+    public static final Method method$NonNullList$set = requireNonNull(
+            ReflectionUtils.getMethod(
+                    clazz$NonNullList,
+                    Object.class,
+                    int.class,
+                    Object.class
+            )
+    );
 }