No, swiping right from the left edge is pretty much universally "go back". Trying it now, it's true in pretty much every app with a navigation model where "back" makes sense; Mail, Settings, Notes, Bitwarden, Messages, Ivory, Nextcloud, a bunch of banking apps, Files, Signal, Slack, etc etc. If an app has a navigation model where "back" makes sense but swiping rightward from the left edge doesn't go back, I get very surprised; it pretty much never happens. I think Google Maps is the only example I can think of at the moment (and Google is generally impressively bad at following iOS platform conventions in my experience).

I guess Discord is an example of an app where swiping from the left opens a hidden menu, but that "opening the hidden menu" thing can be thought of navigating "back" from the channel view to the server/channel list view. In any case, it's not an example of a situation where there is a "navigate back" option on the screen but swiping from the left edge doesn't trigger it.