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/pages/add-knowledge/components/knowledge-file/index.less

@@ -1,6 +1,12 @@
 .datasetWrapper {
-  padding: 30px;
-  flex: 1;
+  padding: 30px 30px 0;
+  height: 100%;
+}
+
+.documentTable {
+  tbody {
+    // height: calc(100vh - 508px);
+  }
 }
 
 .filter {