update isSupportSticky()

src/core/platform/web/config.js

@@ -222,12 +222,12 @@
         return BI.extend({}, ob, { type: "bi.vtape" });
     });
     BI.Plugin.configWidget("bi.horizontal_sticky", function(ob) {
-        if (!isSupportSticky) {
+        if (!isSupportSticky()) {
             return BI.extend({ scrollx: true }, ob, { type: "bi.horizontal_fill" });
         }
     });
     BI.Plugin.configWidget("bi.vertical_sticky", function(ob) {
-        if (!isSupportSticky) {
+        if (!isSupportSticky()) {
             return BI.extend({ scrolly: true }, ob, { type: "bi.vertical_fill" });
         }
     });