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/devcmd/cmds/MakeItemCmd.java

@@ -154,7 +154,7 @@ public class MakeItemCmd extends AbstractDevCmd {
 
         for (int i = 0; i < quantity; i++) {
 
-            int weight = template.item_wt;
+            int weight = template.cacheTemplate.getItemWt();
 
             if (!cim.hasRoomInventory(weight)) {
                 throwbackError(pc, "Not enough room in inventory for any more of this item. " + i + " produced.");