fix: 修复3处问题

1. AreaConvert缺少两个方法导致编译报缺少转换函数
2. 修复SocialUserBindReqVO.java在因为lombok和mapstruct的问题，导致报未知属性的问题
3. 修复Bpm报缺少AsyncTaskExecutor的问题

yudao-framework/yudao-spring-boot-starter-flowable/src/main/java/cn/iocoder/yudao/framework/flowable/config/YudaoFlowableConfiguration.java

@@ -17,8 +17,8 @@ public class YudaoFlowableConfiguration {
      *
      * 如果不创建，会导致项目启动时，Flowable 报错的问题
      */
-    @Bean
-    @ConditionalOnMissingBean
+    @Bean(name = "applicationTaskExecutor")
+    @ConditionalOnMissingBean(name = "applicationTaskExecutor")
     public AsyncListenableTaskExecutor taskExecutor() {
         ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
         executor.setCorePoolSize(8);