Strange behavior after editing published tool schema

### Problem description
When user tryies to copy published tool schema, he gets nothing on UI, but creates copy of source schema with "SYSTEM" category

### Step to reproduce
Steps to reproduce the behavior:
1. Create tool
2. Create tool schema and publish it
3. Edit something in created schema and save changes
4. Nothing happend
5. Open database and find created schema in "SYSTEM" category

### Expected behavior
User cannot edit published schema
OR
Schema copied properly