fix: correct ordered list styling issue in editor (#6656)

#### What type of PR is this?

/area ui
/kind bug
/milestone 2.20.x

#### What this PR does / why we need it:

修复编辑器中有序列表的样式问题。

#### Which issue(s) this PR fixes:

Fixes #6615 

#### Does this PR introduce a user-facing change?

```release-note
修复编辑器中有序列表的样式问题。
```

ui/packages/editor/src/styles/base.scss

@@ -75,7 +75,8 @@
         }
       }
 
-      ul {
+      ul,
+      ol {
         list-style-type: revert-layer;
       }