Fixing com_content ACL to restore "Save as Copy" and "Save & New" buttons

### Issue
See Issue #4328. "Save as Copy" and "Save & New" buttons are currently not available in the article edit form.
This is because PR #4198 broke the ACL for core.create.

### Solution
Reverting PR #4198 since it broke "Save as Copy" and "Save & New" buttons in com_content.

### Testing
Make sure ACL works in com_content and other extensions as expected.