Regression(r147893) Caused several editing tests to fail
https://bugs.webkit.org/show_bug.cgi?id=114143

Unreviewed.

* editing/deleting/delete-ligature-003-expected.txt:
* editing/deleting/delete-ligature-003.html:
* editing/selection/context-menu-text-selection-expected.txt:
* editing/selection/context-menu-text-selection.html:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@147898 268f45cc-cd09-0410-ab3c-d52691b4dbfc