copyDataComponents on SmithingTransformRecipe is not working as intended

Expected behavior

According to javadocs, setting copyDataComponents parameter to false should prevent components to be copied from the base item, to the recipe result.

https://jd.papermc.io/paper/1.21.10/org/bukkit/inventory/SmithingTransformRecipe.html#%3Cinit%3E(org.bukkit.NamespacedKey,org.bukkit.inventory.ItemStack,org.bukkit.inventory.RecipeChoice,org.bukkit.inventory.RecipeChoice,org.bukkit.inventory.RecipeChoice,boolean)

Observed/Actual behavior

Setting this copyDataComponents to false makes no visible effect. Components from the base item are still copied to the recipe result.

Steps/models to reproduce

1. Create and register new SmithingTransformRecipe, where copyDataComponents is set to false.
2. See that components from base item are still copied to the recipe result.

new SmithingTransformRecipe(NamespacedKey.fromString("example:diamond_pickaxe_from_smithing"), ItemStack.of(Material.DIAMOND_PICKAXE), RecipeChoice.empty(), new RecipeChoice.MaterialChoice(Material.IRON_PICKAXE), new RecipeChoice.MaterialChoice(Material.DIAMOND), false);

Plugin and Datapack List

none

Paper version

[22:09:32 INFO]: Checking version, please wait...
[22:09:32 INFO]: This server is running Paper version 1.21.10-108-main@97452e1 (2025-11-10T18:27:52Z) (Implementing API version 1.21.10-R0.1-SNAPSHOT)
You are running the latest version
Previous version: 1.21.10-105-1f31ee5 (MC: 1.21.10)

Other

No response

Start at the SmithingTransformRecipe constructor and its copyDataComponents parameter, using the Java reproduction in the issue to observe the result. Verify whether setting the parameter to false prevents components from the base item from appearing in the recipe result; the issue is resolved when this behavior matches the javadocs.