perf: 子表单中有字段可读可写，记录主字段可提交

src/views/plugin/workflow/mixins/ex-form.js

@@ -89,6 +89,12 @@ export default {
             if (col.type == 'dynamic') {
               col.children.addBtn = false
               col.children.delBtn = false
+
+              // 子表单中有字段可读可写，记录主字段可提交
+              col.children.column.forEach(cc => {
+                const child = taskForm.find(t => t.id == cc[props.prop])
+                if (child && child.writable && child.readable) vars.push(col[props.prop])
+              })
             } else {
               col.readonly = true
               col.disabled = true