If these systems don't allow lying in self defense, then they must not allow self defense at all, because lying in self defense is a trivial application of the general right to self defense.
'Rights' are most usefully thought of in political contexts; ethically, the question is not so much "Do I have a right to self-defense?" as "Should I defend myself?".
For Kant (the principal deontologist), lying is inherently self-defeating. The point of lying is to make someone believe what you say; but, if everyone would lie in that circumstance, then no one would believe what you say. And so lying cannot be universalized for any circumstance, and so is disallowed by the criterion of universalizability.
if everyone would lie in that circumstance, then no one would believe what you say.
This is only true if the other party is aware of the circumstance. If they are not - if they are already deceived about the circumstance - then if everyone lied in the circumstance, the other party would still be deceived. Therefore lying is not self-defeating.
In secret, an unemployed man with poor job prospects uses his savings to buy a large term life insurance policy, and designates a charity as the beneficiary. Two years after the policy is purchased, it will pay out in the event of suicide. The man waits the required two years, and then kills himself, much to the dismay of his surviving relatives. The charity receives the money and saves the lives of many people who would otherwise have died.
Are the actions of this man admirable or shameful?