encoded_target triggers assertion with query parameters in boost 1.91

[jeremiahar]

The following code asserts starting in boost 1.91.0:

#include <boost/url/url.hpp>
#include <string>

int main(int argc, char **argv)
{
    boost::urls::url url;
    
    url.params().set("a", "b");
    url.params().set("c", "d");

    std::string encoded_target = std::string(url.encoded_target());
    return 0;
}

/usr/local/include/boost/url/impl/url_view_base.hpp:683: boost::urls::pct_string_view boost::urls::url_view_base::encoded_target() const: Assertion `pct_string_view( impl().get(id_path, id_frag) ).decoded_size() == n' failed.