perf: 添加超时处理以防止上传参数请求挂起并优化上传参数事件分发

src/components/ShowFile/ShowFile.vue

@@ -1210,6 +1210,7 @@ export default {
           this.onmessage(msg.data)
           break
         case 'getUploadParams':
+          // 接收到 getUploadParams 事件，分发 onUploadParams 事件，携带上传参数
           this.$store.dispatch('updateMessage', {
             event: 'onUploadParams',
             data: this.getUploadParams(),

src/components/SimpleUploader/globalUploader.vue

@@ -327,7 +327,7 @@ export default {
       try {
         const waitForParams = new Promise((resolve, reject) => {
           this.resolveFilesAddedPromise = resolve;
-          // 添加超时以防止未收到响应时挂起
+          // 添加超时以防止未收到响应时挂起，如果服务端没有及时返回上传参数，则取消上传
           setTimeout(() => reject(new Error('Timeout waiting for upload parameters')), 3000);
         });