fix pdf显示bug

src/views/thinkTank/reportOriginal/pdf.vue

@@ -13,10 +13,10 @@
 <script>
 import { ref, shallowRef, nextTick, watch } from 'vue';
 import * as pdfjsLib from 'pdfjs-dist/legacy/build/pdf';
-import pdfWorkerUrl from 'pdfjs-dist/legacy/build/pdf.worker.min?url';
+import PdfWorker from 'pdfjs-dist/legacy/build/pdf.worker.min?worker';
 
-// 通过 Vite 的 ?url 产出静态资源地址，确保线上/线下都能正确加载 worker
-pdfjsLib.GlobalWorkerOptions.workerSrc = pdfWorkerUrl;
+// 使用 Vite 的 ?worker 直接注入 Worker，避免线上 mjs MIME 类型问题
+pdfjsLib.GlobalWorkerOptions.workerPort = new PdfWorker();
 export default {
   name: 'PdfViewer',
   props: {