pkg/instance/start.go: ignore lint error on windows

```
Error: pkg\instance\start.go:274:65: SA4023: this comparison is always true (staticcheck)
  		if err := syscall.Exec(limactl, haCmd.Args, haCmd.Environ()); err != nil {
```

Signed-off-by: Akihiro Suda <[email protected]>

Author: AkihiroSuda

pkg/instance/start.go

@@ -12,6 +12,7 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	"runtime"
 	"syscall"
 	"text/template"
 	"time"
@@ -254,6 +255,9 @@ func Start(ctx context.Context, inst *store.Instance, limactl string, launchHost
 
 	if launchHostAgentForeground {
 		logrus.Info("Running the host agent in the foreground")
+		if runtime.GOOS == "windows" {
+			return errors.New("launchHostAgentForeground is not supported on Windows")
+		}
 		if isatty.IsTerminal(os.Stdin.Fd()) || isatty.IsCygwinTerminal(os.Stdin.Fd()) {
 			// Write message to standard log files to avoid confusing users
 			message := "This log file is not used because `limactl start` was launched in the terminal with the `--foreground` option."
@@ -271,6 +275,7 @@ func Start(ctx context.Context, inst *store.Instance, limactl string, launchHost
 				return err
 			}
 		}
+		//nolint:staticheck // windows: SA4023: this comparison is always true
 		if err := syscall.Exec(limactl, haCmd.Args, haCmd.Environ()); err != nil {
 			return err
 		}