feat(xispeak): 新增删除单条流程接口，改用processInstId删除流程

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/views/bg/xispeak/BgXiSpeakList.vue

@@ -83,6 +83,7 @@
     updateLaunchType,
     saveOrUpdateDict,
     withDrawXiSpeak,
+    deleteSingleProcess,
     getRootListWithDept,
     bgXiSpeakFeedbackList,
   } from './BgXiSpeak.api';
@@ -597,7 +598,7 @@
   }
 
   async function handleDeleteProcess(processRecord, reload) {
-    const res = await withDrawXiSpeak({ id: currentBusinessId.value });
+    const res = await deleteSingleProcess({ processInstId: processRecord.processInstId });
     if (res.success) {
       createMessage.success(res.message || '删除流程成功');
       await reload();