fix: pass remote desktop protocol

[TheDuffman85]

Overview

Fixes mobile remote desktop connections so RDP, VNC, and Telnet sessions pass the selected protocol to the Guacamole backend instead of falling back to the host's connectionType.

• Updated: Mobile remote desktop session state to preserve the selected protocol.
• Fixed: RDP/VNC/Telnet connections in the shared mobile app no longer incorrectly request ssh remote desktop sessions.

Changes Made

• Added a RemoteDesktopProtocol value to mobile session state.
• Updated the host action sheet so RDP, VNC, and Telnet actions open remote desktop sessions with their explicit protocol.
• Updated the Guacamole token request helper to send { protocol } when available.
• Passed the stored protocol through Sessions into RemoteDesktop.
• Preserved protocol information when reviving remote desktop tabs from the connections panel.
• Kept protocol-less remote desktop sessions labeled as Remote to avoid unrelated fallback UI changes.

Related Issues

• Closes [BUG] RDP and VNC connections not working (Android App) Support#791

Screenshots / Demos

Checklist

• Code follows project style guidelines
• Supports mobile app
• I have read Contributing.md