调整跨端通讯接收中心，提取部分公共代码到基类

Tevin

2023-03-31 363145d7531cc97f842d5b7a4e520ac870737065

 forms/form/CForm.vue

@@ -92,6 +92,12 @@
                callback && callback(true);
            });
        },
        $submit() {
            this.handleSubmit();
        },
        $preVerify(keys, callback) {
            this.preCheckValidators(keys, callback);
        },
    },
    mounted() {
        // 当表单项变化时