QWebSocketServer creates persistent files in Microsoft/Crypto/RSA on each new client connection.

When using QWebSocketServer on Windows, a new file is created under the AppData/Roaming/Microsoft/Crypto/RSA directory every time a new client connects. These files are not deleted after the connection is closed, nor when the application exits, leading to accumulation of leftover files over time.

Steps to Reproduce:

1. Run sslechoserver (https://doc.qt.io/qt-6.5/qtwebsockets-sslechoserver-example.html)

2. Start the server and connect a client.

3. After connected, check the folder:
%APPDATA%\Roaming\Microsoft\Crypto\RSA\<user SID>\

4. Observe a new file being added for each client connection.

5. Close client connection and exit the application.

6. Files remain in the folder.