Impossible to use RefactoringScriptService#restore(String batchId) directly if the author has programming right

For example, the following

{{velocity}}
#set ($batchId = "5cfabdc7-ecdd-49f3-90ba-a3fce03e0de2")
$services.refactoring.restore($batchId)
{{/velocity}}

produces the error

The author [null] of this script is not allowed to restore document [xwiki:Level1.WebHome()] with ID [11]

The request is initialized with the current user, but not the author. When you don't have programming right, #execute() will reset the right, bit this time it does set the author (and fix the request).

Same problem with the other #restore API and might be true with other methods of RefactoringScriptService.