In fact, this was already foreseen in bitcoin, and in fact in all crypto that has hashed public keys:

https://en.bitcoin.it/wiki/Quantum_computing_and_BitcoinEssentially, only used once-addresses are safe, and the trick is to use the public key that is hashed, as the secret key of a hash-based signature scheme (one-shot, but you only need one-shot). Lamport signatures are a possibility.

(because the public key is now the secret key, this explains why an address can only be used once: if you use it twice, your public key is exposed).

It is old news, because already in 2013, a certain Vitalik Butterin explained this:

https://bitcoinmagazine.com/articles/bitcoin-is-not-quantum-safe-and-how-we-can-fix-1375242150/