fix: 微信登录新建用户时设置占位password避免数据库约束报错

src/main/java/com/petstore/service/UserService.java

@@ -71,6 +71,7 @@ public class UserService {
             user.setUsername(phone);
             user.setPhone(phone);
             user.setName("微信用户" + phone.substring(7));
+            user.setPassword("wx_no_password");
             user.setRole("customer");
             user.setCreateTime(LocalDateTime.now());
             user.setUpdateTime(LocalDateTime.now());