KERNEL-14512 fix: 修改 z-tree 严格模式下的问题

src/case/ztree/jquery.ztree.excheck-3.5.js

@@ -489,7 +489,7 @@ import $ from "jquery";
                     r = consts.radio,
                     checkboxType = setting.check.chkboxType;
                 var notEffectByOtherNode = checkboxType.Y === "" && checkboxType.N === "";
-                fullStyle = "";
+                var fullStyle = "";
                 if (node.chkDisabled === true) {
                     fullStyle = c.DISABLED;
                 } else if (node.halfCheck) {