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/net/client/handlers/TransferItemToBankMsgHandler.java

@@ -76,7 +76,7 @@ public class TransferItemToBankMsgHandler extends AbstractClientMsgHandler {
 
             } else {
 
-                if (!itemManager.hasRoomBank(item.template.item_wt))
+                if (!itemManager.hasRoomBank(item.template.cacheTemplate.getItemWt()))
                     return true;
 
                 if (!itemManager.moveItemToBank(item))