fix:plain text cannot copy linefeed

src/editor/utils/clipboard.ts

@@ -94,7 +94,10 @@ export function writeElementList(elementList: IElement[], options: DeepRequired<
   }
   buildDomFromElementList(zipElementList(elementList))
   // 写入剪贴板
+  document.body.append(clipboardDom)
   const text = clipboardDom.innerText
+  // 先追加后移除，否则innerText无法解析换行符
+  clipboardDom.remove()
   const html = clipboardDom.innerHTML
   if (!text || !html) return
   writeClipboardItem(text, html)