Fix objects tree sort method check

[zoidbergx]

Changes in this pull request

Changed check for sort menu in object tree to show the sort method.

I don't know what the original implentation should cover but in my understanding we have following initial position:

• There is a specific permission to disallow changing the data objects sort method BUT not the sorting itself
  
• If we disallow the permission with the current implementation the user is still able to change the sort method because of the check in tree.js

With this change the user is not allowed to change the "sort method" but he is still allowed to change the sorting itself either by A-Z / Z-A or manually by changing the index via drag and drop.

To disallow the sorting itself, for me this a different topic and not covered with the permission objects_sort_method

HOW

• prepare a folder with e.g. an admin user and set the sort method to A-Z
  
• create a User without the permission objects_sort_method
  
• the user is still allowed to change the sort method
  

CHANGE IN THIS PR

With this patch the user is still allowed to change the sorting but not the sort method

[github-actions]

Review Checklist

• Target branch (10.5 for bug fixes, others 11.x)
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