Change list type incorrect

[Garry Yao]

Reproducing Procedures

1. Open the replace by class example page with enterMode = br in FF;
2. Make the content and selection same as below:

   text<ol><li>ite^m1</li><li>ite^m2</li></ol>text
   

3. Click on 'Bullet List' command to change the list type.
   • Expected Result:

     text<ul><li>item1</li><li>item2</li></ul>text
     

   • Actual Result: Javascript error thrown.

[Garry Yao]

The patch is including the fix at #3618 for easy reviewing.

[Garry Yao]

Updating the reliance from #3618.

[Martin Kou]

Since the fix to this ticket is the same as #3618, please mark this as fixed when #3618 is commited.

[Garry Yao]

Fixed with [3605].