Steps to reproduce:

* Build with `integer` sanitizer
* `UBSAN_OPTIONS="suppressions=$(pwd)/test/sanitizer_suppressions/ubsan:print_stacktrace=1:halt_on_error=1:report_error_type=1" ./src/qt/bitcoin-qt`
* Enter into the RPC debug console: `decodepsbt "cHNidP8BAKOro2MDAwMDA5ggCAAA////CQAtAAD+///1AAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAJAAAAAAAAAAAAAAAAAAAAAAAAAD+///1Zm9ybmV3nWx1Y2vmelLmegAAAAAAAAAAAAAAAAAAAAMKAwMDAwMDAwMDAwMACvMBA3FkAAAAAAAAAAAABAAlAAAAAAAAACEWDQ0zDQ0NDQ0NDQ0NCwEAAH9/f39/fwMAAABNo6P///kAAA=="`
for (const auto& [pubkey_leaf, sig] : m_tap_script_sigs) {
                const auto& [xonly, leaf_hash] = pubkey_leaf;
                SerializeToVector(s, PSBT_IN_TAP_SCRIPT_SIG, xonly, leaf_hash);
                s << sig;
            }
            
            for (const auto& [leaf, control_blocks] : m_tap_scripts) {
                const auto& [script, leaf_ver] = leaf;
                for (const auto& control_block : control_blocks) {
                    SerializeToVector(s, PSBT_IN_TAP_LEAF_SCRIPT, Span{control_block});
                    std::vector<unsigned char> value_v(script.begin(), script.end());
                    value_v.push_back((uint8_t)leaf_ver);
                    s << value_v;
                }
            }
            
            for (const auto& [xonly, leaf_origin] : m_tap_bip32_paths) {
                const auto& [leaf_hashes, origin] = leaf_origin;
                SerializeToVector(s, PSBT_IN_TAP_BIP32_DERIVATION, xonly);
                std::vector<unsigned char> value;
                CVectorWriter s_value(s.GetType(), s.GetVersion(), value, 0);
                s_value << leaf_hashes;
                SerializeKeyOrigin(s_value, origin);
                s << value;
            }
            
            if (!m_tap_internal_key.IsNull()) {
                SerializeToVector(s, PSBT_IN_TAP_INTERNAL_KEY);
                s << ToByteVector(m_tap_internal_key);
            }