fix: omit long file names (#608)

### What problem does this PR solve?

#607
fix: omit long file names
fix: change the parsing method from tag to select
fix: replace icon for new chat
fix: change the OK button text of the Chat Bot API modal to close


### Type of change

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

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

@@ -28,7 +28,7 @@
   min-width: 200px;
 }
 
-.tochunks {
+.toChunks {
   cursor: pointer;
 }
 
@@ -42,3 +42,7 @@
   cursor: help;
   writing-mode: horizontal-tb;
 }
+
+.nameText {
+  color: #1677ff;
+}