fix: handle multiple content source when pasting to translate input (#9919)

* fix(translate): 处理粘贴事件时增加处理中状态检查

* fix(translate): 修复粘贴文本时未阻止默认行为的问题

添加event.preventDefault()以防止粘贴文本时触发默认行为
同时优化粘贴逻辑，优先处理文本内容

src/renderer/src/pages/translate/TranslatePage.tsx

@@ -612,9 +612,14 @@ const TranslatePage: FC = () => {
   // 粘贴上传文件
   const onPaste = useCallback(
     async (event: React.ClipboardEvent<HTMLTextAreaElement>) => {
+      event.preventDefault()
+      if (isProcessing) return
       setIsProcessing(true)
       logger.debug('event', event)
-      if (event.clipboardData?.files && event.clipboardData.files.length > 0) {
+      const text = event.clipboardData.getData('text')
+      if (!isEmpty(text)) {
+        setText(text)
+      } else if (event.clipboardData.files && event.clipboardData.files.length > 0) {
         event.preventDefault()
         const files = event.clipboardData.files
         const file = getSingleFile(files) as File
@@ -659,7 +664,7 @@ const TranslatePage: FC = () => {
       }
       setIsProcessing(false)
     },
-    [getSingleFile, processFile, t]
+    [getSingleFile, isProcessing, processFile, t]
   )
   return (
     <Container