fix: filter knowledge list by keywords and clear the selected file list after the file is uploaded successfully and add ellipsis pattern to chunk list (#628)

### What problem does this PR solve?

#627 
fix: filter knowledge list by keywords
fix: clear the selected file list after the file is uploaded
successfully
feat: add ellipsis pattern to chunk list

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/components/file-upload-modal/index.tsx

@@ -68,15 +68,20 @@ const FileUploadModal = ({
   const [fileList, setFileList] = useState<UploadFile[]>([]);
   const [directoryFileList, setDirectoryFileList] = useState<UploadFile[]>([]);
 
+  const clearFileList = () => {
+    setFileList([]);
+    setDirectoryFileList([]);
+  };
+
   const onOk = async () => {
     const ret = await onFileUploadOk?.([...fileList, ...directoryFileList]);
-    if (ret !== undefined && ret === 0) {
-      setFileList([]);
-      setDirectoryFileList([]);
-    }
     return ret;
   };
 
+  const afterClose = () => {
+    clearFileList();
+  };
+
   const items: TabsProps['items'] = [
     {
       key: '1',
@@ -110,6 +115,7 @@ const FileUploadModal = ({
         onOk={onOk}
         onCancel={hideModal}
         confirmLoading={loading}
+        afterClose={afterClose}
       >
         <Flex gap={'large'} vertical>
           <Segmented