I got the idea during research yesterday about the solution for non-rbf transaction and I came across to this post below and they mentioned about -mempoolfullrbf(added on Bitcoin core v24.0) which accept transaction replacement without the original transaction replaceability signal.
Running a full node at the moment means you're probably already connected with someone who's running mempoolfullrbf=1, so broadcasting a replacement of a no-rbf transaction should probably pass.
Note that if you don't run your own full node, then probably blockstream's block explorer will accept Full RBF:
https://blockstream.info/tx/push (connect there via Tor). That being said, I don't know if the Electrum server ignores policy rules, or if your Electrum client will allow you to do that.