fix(form): modify validation rules

src/packages/__VUE/form/common.ts

@@ -99,7 +99,7 @@ export const component = (components: any) => {
           const { required, regex, message } = ruleWithoutValidator;
           const errorMsg = { prop, message };
           if (required) {
-            if (!value) {
+            if (!value && value !== 0) {
               return _Promise(errorMsg);
             }
           }