HTTPS required

$ cd xxdk-examples/htmljs
$
$ python3 -m http.server

However, nothing happens in the UI when Send is pressed.

Debugger:

FATAL 2024/10/18 14:09:42 SubtleCrypto unavailable; is a secure context (TLS/https) enabled?
gitlab.com/elixxir/crypto/rsa.init.0
	gitlab.com/elixxir/crypto@v0.0.9/rsa/subtleCrypto_js.go:29

Similarly to Haven, etc., this seems unable to work w/o HTTPS.

Perhaps an example-level (or repo-level) note should be added to remind users of that?