Unexpected NOTIFY messages

**Describe the bug**
With existing links to a script file (not a folder), Notify sends Warnings on any changes in the files folder.
This doesn´t happen, when only folders are linked.

**To Reproduce**
```
]LINK.Create 'EXCEL' 'F:\Test\Code\Excel.dyalog'
Linked: #.EXCEL ←→ F:\Test\Code\Excel.dyalog
]LINK.Create 'ADO' 'F:\Test\Code\ADO.apln'
Linked: #.ADO ←→ F:\Test\Code\ADO.apln

(3 3⍴⍳9)(⎕CSV⍠('IfExists' 'Replace')('Separator' ';')('Decimal' ',')) 'F:\Test\Code\Data\test.csv'
Link Warning: ⎕SE.Link.Notify: created F:/Test/Code/Data/test.csv: path not in a linked directory
Link Warning: ⎕SE.Link.Notify: created F:/Test/Code/Data/test.csv: path not in a linked directory
Link Warning: ⎕SE.Link.Notify: changed F:/Test/Code/Data/test.csv: path not in a linked directory
Link Warning: ⎕SE.Link.Notify: changed F:/Test/Code/Data/test.csv: path not in a linked directory
```
**Expected behaviour**
I would not expect a warning in this case, because the Data folder is not linked. Only single files in its parent folder are linked.

**Desktop :**
- OS: Windows
- APL version: 19.0 Unicode 64-bit]
- `⎕SE.Link.Version`: 4.0.17