Create list on whole paragraph incorrect

[Garry Yao]

Reproducing Procedures

1. Open the replace by class example page, load the document with the following content with selection;

   <p>
   	^paragraph1</p>
   <p>
   	paragraph2</p>
   

2. Click on 'p' item on the elements path bar to fully select the first paragraph;
3. Click on 'Numbered List' button to convert it to list;
   • Expected Result :

     [<ol>
     	<li>
     		paragraph1<br />
     	</li>
     </ol>]
     <p>
     	paragraph2</p>
     

   • Actual Result : There's an empty paragraph created above it.

     <p>
     	<br />
     </p>
     [<ol>
     	<li>
     		paragraph1<br />
     	</li>
     </ol>]
     <p>
     	paragraph2</p>
     

[Garry Yao]

The fixing of this ticket has some conflict with #3608, which will be hold until #3608 get fixed.

[Garry Yao]

Unable to reproduce anymore on trunk.