Fixes some savage fail problems

Fixes item not being returned when salvage fails
Removes some redundancy when giving back items
Makes extended salvage return 50% of the salvage (no items if only one item would be returned)
Adds a better message when failing to salvage extended salvage items
Fixes a bug in the caching of smith presets

src/main/java/net/knarcraft/blacksmith/util/ItemHelper.java

@@ -83,16 +83,16 @@ public final class ItemHelper {
      *
      * @param item      <p>The item to update damage for</p>
      * @param newDamage <p>The new damage done</p>
-     * @return <p>True if the damage was updated. False if not damageable.</p>
+     * @return <p>False if the damage was updated. False if not damageable.</p>
      */
     public static boolean updateDamage(@NotNull ItemStack item, int newDamage) {
         ItemMeta meta = item.getItemMeta();
         if (!(meta instanceof Damageable damageable)) {
-            return false;
+            return true;
         }
         damageable.setDamage(newDamage);
         item.setItemMeta(meta);
-        return true;
+        return false;
     }
 
     /**