Fix Bug #545: 补全诊断添加处缺失的 longTermFlag 默认值 — 第三个 push 调用缺少 longTermFlag: 0，导致通过此路径添加的诊断该字段为 undefined

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

openhis-ui-vue3/src/views/doctorstation/components/diagnosis/diagnosis.vue

@@ -884,6 +884,7 @@ form.value.diagnosisList.push({
     diagnosisDoctor: props.patientInfo.practitionerName || props.patientInfo.doctorName || props.patientInfo.physicianName || userStore.name,
     diagnosisTime: getCurrentDate(),
     selectedDiseases: data.ybNo ? [data.ybNo] : [],  // 用于传染病报告卡自动勾选
+    longTermFlag: 0, // 默认非长效诊断
   });
   
   // 添加后按排序号排序