fix(xispeak): 修复BPM表单输入被刷掉和新增表单带入旧数据

- BPM表单：processInstanceId变化时仅刷新反馈列表，不再全量重载主表数据
- 编辑表单：新增时同步重置为默认值，弹窗强制重建组件避免数据残留

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

src/views/bg/xispeak/components/BgXiSpeakBPMForm.vue

@@ -497,7 +497,16 @@
     initFormData();
   });
 
-  watch([() => props.formData?.dataId, () => processInfo.value.processInstanceId], () => initFormData());
+  watch(
+    () => props.formData?.dataId,
+    () => initFormData()
+  );
+  watch(
+    () => processInfo.value.processInstanceId,
+    (newVal) => {
+      if (newVal) loadFeedbackList();
+    }
+  );
 
   watch(showDeptFeedback, () => {
     loadFeedbackList();