fix(video): prevent encoder probing with no active displays

[FrogTheFrog]

Description

Since Windows 11 24H2 update it seems that Windows can get into a broken state where probing encoders (or likely also just using DXGI API) will break Sunshine in such a way that it cannot start any stream nor the libdisplaydevice is able to access the windows API to do any changes.

While this is not a perfect solution to the problem, the user can at least do something (plug or unplug displays) or libdisplaydevice could try restoring previous config once the API is available.

Issues Fixed or Closed

• Resolves HDR does not revert to On State upon disconnect #3580 (due to libdd bump)

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Dependency update (updates to dependencies)
• Documentation update (changes to documentation)
• Repository update (changes to repository files, e.g. .github/...)

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated the in code docstring/documentation-blocks for new or existing methods/components

[sonarqubecloud]

Quality Gate failed

Failed conditions
1 New issue
1 New Code Smells (required ≤ 0)

See analysis details on SonarQube Cloud

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 13 lines in your changes missing coverage. Please review.

Project coverage is 11.63%. Comparing base (a5c7916) to head (54022b9).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/display_device.cpp	0.00%	8 Missing and 1 partial ⚠️
src/video.cpp	0.00%	2 Missing and 1 partial ⚠️
src/nvhttp.cpp	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3592      +/-   ##
==========================================
- Coverage   11.64%   11.63%   -0.01%     
==========================================
  Files          93       93              
  Lines       17302    17314      +12     
  Branches     8081     8086       +5     
==========================================
  Hits         2014     2014              
- Misses      12808    12818      +10     
- Partials     2480     2482       +2     

Flag	Coverage Δ
Linux	11.31% <0.00%> (-0.02%)	⬇️
Windows	13.04% <0.00%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
src/nvhttp.cpp	18.54% <0.00%> (ø)
src/video.cpp	21.85% <0.00%> (-0.07%)	⬇️
src/display_device.cpp	54.62% <0.00%> (-1.46%)	⬇️