Firefox 86 falls back on HTTP transparently (e.g. try it with sane-project.org). I'd like to disable that, but without also adding a (stateful, fingerprintable)

Firefox 86 falls back on HTTP transparently (e.g. try it with sane-project.org). I'd like to disable that, but without also adding a (stateful, fingerprintable) confirmation step to follow HTTP links.