Fix NPX issue with TailwindCSS v4

This allows the `tailwindcss` CLI binary to live in the `PATH` for NPM-less projects.

Fixes #13221

hugolib/testhelpers_test.go

@@ -838,7 +838,7 @@ func (s *sitesBuilder) NpmInstall() hexec.Runner {
 	var err error
 	sc.Exec.Allow, err = security.NewWhitelist("npm")
 	s.Assert(err, qt.IsNil)
-	ex := hexec.New(sc, s.workingDir)
+	ex := hexec.New(sc, s.workingDir, loggers.NewDefault())
 	command, err := ex.New("npm", "install")
 	s.Assert(err, qt.IsNil)
 	return command