feat(bpm): 支持流程打印渲染业务表单

- 在 vue3、vben antd、vben ele 打印弹窗中动态加载业务表单组件
- 未启用自定义打印模板且流程表单字段为空时，使用 formCustomViewPath 渲染业务详情
- 业务表单独立于打印表格渲染，避免表格单元格内嵌页面导致布局和分页问题
- 保留 readonly、print-mode 作为业务详情组件打印态适配约定

src/views/bpm/processInstance/detail/PrintDialog.vue

@@ -14,6 +14,7 @@ import {
   getStrDictOptions
 } from '@/utils/dict'
 import { decodeFields } from '@/utils/formCreate'
+import { registerComponent } from '@/utils/routerHelper'
 
 interface FormFieldItem {
   html: string
@@ -58,6 +59,7 @@ const userName = computed(() => userStore.user.nickname ?? '')
 const printTime = ref(formatDate(new Date(), 'YYYY-MM-DD HH:mm'))
 const formFields = ref<FormFieldItem[]>([])
 const printDataMap = ref<Record<string, string>>({})
+const BusinessFormComponent = shallowRef<any>()
 
 const open = async (id: string) => {
   loading.value = true
@@ -66,6 +68,7 @@ const open = async (id: string) => {
     printTime.value = formatDate(new Date(), 'YYYY-MM-DD HH:mm')
     initPrintDataMap()
     await parseFormFields()
+    initBusinessFormComponent()
   } finally {
     loading.value = false
   }
@@ -73,6 +76,12 @@ const open = async (id: string) => {
 }
 defineExpose({ open })
 
+const initBusinessFormComponent = () => {
+  const businessFormPath =
+    printData.value?.processInstance?.processDefinition?.formCustomViewPath || ''
+  BusinessFormComponent.value = businessFormPath ? registerComponent(businessFormPath) : undefined
+}
+
 const parseFormFields = async () => {
   if (!printData.value) return
 
@@ -498,6 +507,19 @@ const printObj = ref({
                 <div v-html="item.html"></div>
               </td>
             </tr>
+          </tbody>
+        </table>
+        <!-- 业务表单：独立成块渲染，不嵌入表格单元格，避免宽度与分页受限 -->
+        <div v-if="BusinessFormComponent && formFields.length === 0" class="mt-20px">
+          <component
+            :is="BusinessFormComponent"
+            :id="printData.processInstance.businessKey"
+            :readonly="true"
+            :print-mode="true"
+          />
+        </div>
+        <table class="mt-20px w-100%" border="1" style="border-collapse: collapse">
+          <tbody>
             <tr>
               <td class="p-5px w-100% text-center" colspan="4">
                 <h4>流程节点</h4>