`TestLanguageConvertComponentSmoke/dotnet` seems flaky

[tgummerer]

=== FAIL: smoke TestLanguageConvertComponentSmoke/dotnet (2.20s)
    environment.go:89: Created new test environment:  C:\Users\RUNNER~1\AppData\Local\Temp\test-env2646794672
    environment.go:203: Running command pulumi plugin install resource random 4.13.0
    environment.go:203: Running command pulumi login --cloud-url file://C:/Users/RUNNER~1/AppData/Local/Temp/test-env2646794672
    environment.go:203: Running command pulumi convert --language csharp --from pcl --out out
    smoke_test.go:203: Run Error: exit status 0xffffffff
    smoke_test.go:203: STDOUT: 
    smoke_test.go:203: STDERR: Converting from pcl...
        Converting to dotnet...
        panic: Failed to load user32: A dynamic link library (DLL) initialization routine failed.
        
        goroutine 1 [running]:
        
        syscall.MustLoadDLL(...)
        
        	syscall/dll_windows.go:95
        
        github.com/atotto/clipboard.init()
        
        	github.com/atotto/clipboard@v0.1.4/clipboard_windows.go:22 +0x325
        
        error: could not generate output program: could not read plugin [D:\a\pulumi\pulumi\bin\pulumi-language-dotnet.exe] stdout: EOF
    smoke_test.go:203: Ran command pulumi args [convert --language csharp --from pcl --out out] and expected success. Instead got failure.

https://github.com/pulumi/pulumi/actions/runs/14383193260/job/40332376666?pr=18719

I think this needs the same fix as in #17410, I should probably upstream this fix.

[tgummerer]

Submitted the fix upstream (atotto/clipboard#74). The repo didn't have any activity since 4 years ago though, so I'm not counting on it getting fixed there.