Read item_type through the cache template bridge

Every consumer of the legacy ItemTemplate item_type now reads
template.cacheTemplate.getItemType(). Left on the legacy field: the
type count in dbItemHandler.LOAD_ITEM_TEMPLATES, which runs before the
bridge is linked. The charter checks already read DeedTemplate.

Parity (offline, static_item_templates vs the template
CObjectIndex.lookup picks, scripts/p14.py, 7586 templates: ITEM 4011,
DEED 880, RUNE 2695): 0 differences in item_type. 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/ObjectActionMsgHandler.java

@@ -79,7 +79,7 @@ public class ObjectActionMsgHandler extends AbstractClientMsgHandler {
 
                 int uuid = item.templateID;
 
-                switch (item.template.item_type) {
+                switch (item.template.cacheTemplate.getItemType()) {
 
                     case DEED: //buildings
                         //Call add building screen here, ib.getUseID() get's building ID
@@ -226,7 +226,7 @@ public class ObjectActionMsgHandler extends AbstractClientMsgHandler {
 
                             // Bypass for waterbuckets
 
-                            if (item.template.item_type.equals(mbEnums.ItemType.BUCKET)) {
+                            if (item.template.cacheTemplate.getItemType().equals(mbEnums.ItemType.BUCKET)) {
 
                                 // test for valid target type
                                 if (target.getObjectType() == mbEnums.GameObjectType.PlayerCharacter)