FTP Connection on remote server drops down

### Apache NetBeans version

Apache NetBeans 16

### What happened

Long time working on Windows OS, 8.1 version, using Remote FTP server and anything was fine.

Now try to work on "MacBook Pro M1 Pro" and when first time save file - its okey, but when try save file second time - ftp connection go down. Try to use different settings, different internet connections - nothing help.

It is very hard to work, when one file need to be saved 3-4 times for success ftp commit.

No stable ftp connection on macOS, on Windows work correct.

### How to reproduce

_No response_

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

Apache NetBeans 12.6 or earlier

### Operating System

macOS 13.0.1 (22A400)

### JDK

16

### Apache NetBeans packaging

Apache NetBeans provided installer

### Anything else

_No response_

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

Yes

### Code of Conduct

Yes

Start by reproducing the second-save failure with Apache NetBeans 16 on macOS 13.0.1 using JDK 16 and a remote FTP server, then compare the behavior with NetBeans 12.6 or earlier and the reported Windows setup. Done means repeated saves no longer drop the FTP connection.

Written by the indexing model from the issue text.