New change breaks saving to soft linked folders

### Feature Idea

This code was recently added, it breaks my saving. (I save to a sub folder of 'output' linked to onanother drive)
Can an option be added to disable that check?

### Existing Solutions

_No response_

### Other

_No response_

No file or test is named. Start by locating the recently added check involved in saving to subfolders, then reproduce the failure with a subfolder of output linked to another drive. Done means saving works for soft-linked folders while the check remains enforceable by default, with coverage for the new option.

Written by the indexing model from the issue text.