feat(room-settings): add underpass walk-under-furniture checkbox

Add allowUnderpass toggle to room settings UI (Info tab), allowing room
owners to enable/disable walking under elevated furniture per room.

Changes:
- IRoomData: add allowUnderpass boolean field
- NavigatorRoomSettingsView: map allowUnderpass from server data, handle
  changes, and send via SaveRoomSettingsComposer
- NavigatorRoomSettingsBasicTabView: add checkbox below "Disabilita blocco caselle"

Requires server-side PR: duckietm/Arcturus-Morningstar-Extended#12
Note: nitro-renderer changes (RoomSettingsData, RoomSettingsDataParser,
SaveRoomSettingsComposer) must be applied separately in node_modules.

Co-Authored-By: medievalshell <medievalshell@users.noreply.github.com>

src/components/navigator/views/room-settings/NavigatorRoomSettingsBasicTabView.tsx

@@ -162,6 +162,11 @@ export const NavigatorRoomSettingsBasicTabView: FC<NavigatorRoomSettingsTabViewP
                 <input className="form-check-input" type="checkbox" checked={ roomData.allowWalkthrough } onChange={ event => handleChange('allow_walkthrough', event.target.checked) } />
                 <Text>{ LocalizeText('navigator.roomsettings.allow_walk_through') }</Text>
             </Flex>
+            <Flex alignItems="center" gap={ 1 }>
+                <Base className="col-3" />
+                <input className="form-check-input" type="checkbox" checked={ roomData.allowUnderpass } onChange={ event => handleChange('allow_underpass', event.target.checked) } />
+                <Text>{ LocalizeText('navigator.roomsettings.allow_underpass') }</Text>
+            </Flex>
             <Text variant="danger" underline bold pointer className="d-flex justify-content-center align-items-center gap-1" onClick={ deleteRoom }>
                 <FaTimes className="fa-icon" /> { LocalizeText('navigator.roomsettings.delete') } 
             </Text>