Cannot upload/download for some folders in a project

### Apache NetBeans version

Apache NetBeans 31

### What happened

Some folders the "upload" and "download" are greyed out. The project syncronises files on save without issue (so it's not a lack of FTP configuration etc)

### Language / Project Type / NetBeans Component

PHP

### How to reproduce

- Right click on a folder (upload enabled)
- right click on a different folder in the same project (with PHP files inside) (upload not enabled)

### Did this work correctly in an earlier version?

Apache NetBeans 27 or earlier

### Operating System

Mac Sequoia 15.5

### JDK

javac 20.0.1

### Apache NetBeans packaging

Apache NetBeans binary zip

### Anything else

_No response_

### Are you willing to submit a pull request?

No

Start by reproducing this in Apache NetBeans 31 with a PHP project, comparing the context menus for a folder where upload is enabled and one containing PHP files where upload and download are greyed out. Verify the behavior against NetBeans 27 or earlier and confirm that upload and download are available for the affected folders without breaking synchronization on save.

Written by the indexing model from the issue text.