@OP, if you die in this way without telling anyone about this, then this depends on where you are holding your funds for a long time. Whether you are holding your funds on an exchange or in a secure wallet. If you are holding your funds on an exchange for the long term (which is a big stupidity), then in such a case, if the exchange commits fraud in any way or goes bankrupt, then it can access your funds. On the other hand, if you die while holding it in a secure wallet, then your holding supply will also be considered locked supply because after you, no one would be able to access it.
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If you prepared anyone else that you really trust for the situation where you die, have you prepared at all for a situation where you both die, such as in an accident?
Hmm, why did I never think this way, haha! This is also a concerning matter. BTW, have you done any preparation for this kind of situation?