Consider the following use case:
1. Go to the WebPreferences of a space
2. Edit the page in object mode
3. Add an object of type XWiki.XWikiGlobalRights. For that object, set the level to `Like` and whatever strategy for it (allow/disallow).
4. Go to the WebPreferences of the space
Expected result: in the table of the rights, `Like` is checked (whether it's set on allow/disallow).
Actual result: `Like` is not checked
What's happening behind the scene: the `Like` column from the table where rights are displayed expects a value of `like` for the levels field, in order to display the checkbox filled.
Going backwards, if `Like` checkbox is filled from the administration's rights view, the levels field will have `like` value in the object, so if the user views the page in editor=object, the `like` will not be filled in the dropdown.