Insert table in empty document add extra line

[Garry Yao]

Reproducing Procedures

1. Open the replace by class example page in FF;
2. Click on 'New Page' to empty the document;
3. Insert a default table;
   • Expected Result:

     <table border="1" cellpadding="1" cellspacing="1" style="width: 200px;">
     ...
     </table>
     <p>
     	<br />
     </p>
     

   • Actual Result: There's an paragraph established before the table:

     <p>
     	<br />
     </p>
     <table border="1" cellpadding="1" cellspacing="1" style="width: 200px;">
     ...
     </table>
     <p>
     	<br />
     </p>
     

[Garry Yao]

Not sure if we need to trim the last paragraph, so keep it in the expected result.