Browser RDP fails with GNOME Remote Desktop And Windows Connection Errors

### Describe the Bug

Trying to connect to GNOME Remote Desktop via new browser RDP feature (1.19.x) getting this error on the login screen.

````
[ConnectionActivation::CapabilitiesExchange] reason: unexpected Share Control PDU
during capabilities exchange: got Server Deactivate All PDU (expected Server Demand Active PDU)
````

Newt logs on target host:

````
Connecting to RDP server localhost:3390
Server selected RDP protocol 0x2 (HYBRID (CredSSP/NLA))
Server TLS handshake OK
RDCleanPath handshake complete, forwarding traffic
````

Possibly coming from upstream IronRDP issue https://github.com/Devolutions/IronRDP/issues/139

### Environment

- OS Type & Version: Ubuntu 24.04.4 LTS (on vps and RDP target)
- Pangolin Version: 1.19.2
- Edition (Community or Enterprise): EE
- Gerbil Version: pulled "latest" with 1.19.2
- Traefik Version: 3.7.5
- Newt Version: 1.13
- Client Version: n/a

### To Reproduce

1. Enable grd on 3390
2. Create public rdp resource
3. Login

### Expected Behavior

RDP client shows remote desktop

Reproduce the browser RDP connection against GNOME Remote Desktop on port 3390 using the listed Ubuntu and Pangolin versions, then compare the capabilities-exchange failure with upstream IronRDP issue #139. Done means the browser RDP client completes login and shows the remote desktop without the Server Deactivate All PDU error.

Written by the indexing model from the issue text.