backend := pterm.DefaultLogger
	logHandler := pterm.NewSlogHandler(backend.WithLevel(pterm.LogLevelDisabled))
	logger.Info("Test")

When setting the slog handler level to LogLevelDisabled, the message still gets printed.
The bug likely is caused in this if-condition:

In this condition, l.Level equals 0, which is smaller than 3 (3 = Info), so the return-clause is skipped and the message gets printed regardless.