refactor: 统一替换登录跳转逻辑为通用方法

将项目内多处手动调用$refs.login.open的登录跳转逻辑，统一替换为新增的redirectTologin通用方法，简化代码并提升维护性，同时统一处理了延迟和nextTick调用逻辑。

pages_promotion/fenxiao/index.vue

@@ -290,16 +290,14 @@ export default {
 	},
 	mixins: [fenxiaoWords],
 	onShow() {
-		if (this.fenxiaoWords && this.fenxiaoWords.concept) this.$langConfig.title(this.fenxiaoWords.concept + this.$lang('center'));
-
-		if (this.storeToken) {
-			this.checkFenxiaoIsStart();
-		} else {
-			this.$nextTick(() => {
-				this.$refs.login.open('/pages_promotion/fenxiao/index', 'redirectTo');
-			});
+		if (!this.storeToken) {
+			this.redirectTologin('/pages_promotion/fenxiao/index');
+			return;
 		}
 
+		if (this.fenxiaoWords && this.fenxiaoWords.concept) this.$langConfig.title(this.fenxiaoWords.concept + this.$lang('center'));
+
+		this.checkFenxiaoIsStart();
 		this.getTemplateId();
 		this.getPoster();
 	},