Reproduction steps:
1. Download and extract the attached “BugRepro” project
2. In the project’s “Packages/manifest.json“ file, observe that there is no "com.unity.toolchain.win-x86_64-linux-x86_64" package
3. Open the “BugRepro” project using a Editor installation that contains Linux Dedicated Server Support component
4. In the Build Settings (File > Build Settings…), observe that the Target Platform is set to Windows
5. In the Package Manager (Window > Package Manager), observe the installed packages

Expected result: The “Toolchain Win Linux x64” package is not installed
Actual result: The “Toolchain Win Linux x64” package is installed and, if removed, is automatically reinstalled again

Reproducible with: 2021.3.40f1, 2022.3.38f1, 6000.0.11f1

Reproducible on: Windows 11
Not reproducible on: No other environments tested

Note: In 2022.3.38f1 and 6000.0.11f1, “Sysroot Base” and “Sysroot Linux x64” packages are also installed as dependencies