Read item weight, value and base name through the bridge

Consumers of the legacy ItemTemplate item_wt, item_value and
item_base_name now read getItemWt(), getItemValue() and
getItemBaseName() on template.cacheTemplate.

Parity (offline, scripts/p14.py, 7586 templates): 0 differences in
item_wt, item_value and item_base_name. No value changes expected.

JSON-Refactor-Plan Task 1.4.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/engine/objects/Account.java

@@ -216,7 +216,7 @@ public class Account extends AbstractGameObject {
             return;
 
         if (item.containerType == mbEnums.ItemContainerType.INVENTORY && player.charItemManager.isVaultOpen()) {
-            if (!player.charItemManager.hasRoomVault(item.template.item_wt)) {
+            if (!player.charItemManager.hasRoomVault(item.template.cacheTemplate.getItemWt())) {
                 ItemToVaultMsgHandler.forceTransferFromVaultToInventory(msg, origin, "There is no room in your vault.");
                 return;
             }
@@ -262,7 +262,7 @@ public class Account extends AbstractGameObject {
             return;
 
         if (item.containerType == mbEnums.ItemContainerType.VAULT && itemManager.isVaultOpen()) {
-            if (!itemManager.hasRoomInventory(item.template.item_wt)) {
+            if (!itemManager.hasRoomInventory(item.template.cacheTemplate.getItemWt())) {
                 ItemFromVaultMsgHandler.forceTransferFromInventoryToVault(msg, origin, "There is no room in your inventory.");
                 return;
             }