netbird pre-shared not persistent again on linux and windows

[support-tt]

Describe the problem
after upgrade netbird from 24.X to 25.X and saw, that my PSK was missing. Maybe this happened before and I dont saw it because all my peers lost theis PSK. When I do a manualy disconnect and connect (in UI and Shell version same problem) my PSK get removed from the configuration.

To Reproduce
Steps to reproduce the behavior:

1. Connect with PSK (netbird up --pre-shared-key "XXXXXX" or in UI)
2. Disconnect (netbird down or in UI disconnect)
3. Connect with netbird up or in UI
4. Key missing ..

Expected behavior
PSK should be persistent over updates and disconnects/connects.

NetBird status -d output:
I see all my peers and connection is working im running the newest 0.25.4 version.

Screenshots
see #887 and #845 its the same problem then in the past

Additional context
this was fixed I opened the issues #887 and #845 and tested it. So something changed again with the persistence of the configuration.

[support-tt]

tested it on windows now too some problem after reboot the PSK is also gone so no traffic encryption with PSK anymore. For me this is a central feature because if the netbird server gets hacked the hacker cant decrypt the traffic without the PSK.

[mlsmaycon]

@support-tt thanks for reporting the issue. I've tested and can confirm the bug since v0.24.3.

We will fix the issue and make a new release today.