fix(audio): fix install of Steam Streaming Speakers driver

[andygrundman]

Description

The Steam driver install code was accidentally ifdef'ed out of existence by a recent refactor.

This of course only fixes x64, I don't know what the arm64 users are supposed to do.

Screenshot

Issues Fixed or Closed

Roadmap Issues

Type of Change

• feat: New feature (non-breaking change which adds functionality)
• fix: Bug fix (non-breaking change which fixes an issue)
• docs: Documentation only changes
• style: Changes that do not affect the meaning of the code (white-space, formatting, missing semicolons, etc.)
• refactor: Code change that neither fixes a bug nor adds a feature
• perf: Code change that improves performance
• test: Adding missing tests or correcting existing tests
• build: Changes that affect the build system or external dependencies
• ci: Changes to CI configuration files and scripts
• chore: Other changes that don't modify src or test files
• revert: Reverts a previous commit
• BREAKING CHANGE: Introduces a breaking change (can be combined with any type above)

Checklist

• Code follows the style guidelines of this project
• Code has been self-reviewed
• Code has been commented, particularly in hard-to-understand areas
• Code docstring/documentation-blocks for new or existing methods/components have been added or updated
• Unit tests have been added or updated for any new or modified functionality

AI Usage

• None: No AI tools were used in creating this PR
• Light: AI provided minor assistance (formatting, simple suggestions)
• Moderate: AI helped with code generation or debugging specific parts
• Heavy: AI generated most or all of the code changes

[ReenigneArcher]

That's my bad. I broke it in #4791

There is no arm version as far as I'm aware.

[codecov]

Bundle Report

Bundle size has no change ✅

[sonarqubecloud]

Quality Gate failed

Failed conditions
1 New issue
1 New Code Smells (required ≤ 0)
D Maintainability Rating on New Code (required ≥ A)

See analysis details on SonarQube Cloud

Catch issues before they fail your Quality Gate with our IDE extension SonarQube for IDE

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (master@e72e684). Learn more about missing BASE report.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #5125   +/-   ##
=========================================
  Coverage          ?   17.84%           
=========================================
  Files             ?      111           
  Lines             ?    24065           
  Branches          ?    10640           
=========================================
  Hits              ?     4295           
  Misses            ?    15538           
  Partials          ?     4232           

Flag	Coverage Δ
Archlinux	11.23% <ø> (?)
FreeBSD-14.3-amd64	13.36% <ø> (?)
Homebrew-ubuntu-22.04	13.58% <ø> (?)
Linux-AppImage	12.15% <ø> (?)
Windows-AMD64	14.89% <ø> (?)
Windows-ARM64	13.23% <ø> (?)
macOS-arm64	18.99% <ø> (?)
macOS-x86_64	18.35% <ø> (?)

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

Files with missing lines	Coverage Δ
src/platform/windows/audio.cpp	25.93% <ø> (ø)

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update e72e684...e1b9b2d. Read the comment docs.