HDR constrains FPS to 60

[RecklessBoon]

Describe the bug When HDR 10 is enabled, the fps is constrained to 60 fps when 120 fps is set in the configuration.

To Reproduce Steps to reproduce the behavior:

1. Go to Device settings
2. Click on 120 fps value and HDR enabled and save
3. Connect to device
4. Check TV reported FPS

Expected behavior Once connected, the TV/monitor should report 120 fps with HDR content being used instead of 60 fps with HDR content

** Logs ** While pressing Menu + View and then "Show Logs", are there any relevant log lines? TBD

Guest Information:

• Xbox Model: [Xbox Series X]
• TV Resolution: [4K HDR @120FPS]

Host Information

• Operating System: [Windows]
• Host Software: [Sunshine]
• Monitor Resolutions: [4K HDR @120fps]

Additional context This was found while testing v1.15.6 in #107