launch: fix on linux systems without flatpak

[BrettMayson]

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[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 67.5%. Comparing base (1da3548) to head (1201cec).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
bin/src/commands/launch/platforms.rs	0.0%	1 Missing ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
bin/src/commands/launch/platforms.rs	0.0% <0.0%> (ø)

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