This should be handled by the Firefox iOS team. I've removed myself from this bug and sent an email to the team to make them aware in case Bugzilla is not looked at.
Bug 1654416 Comment 7 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
I have forwarded this to the Firefox iOS team through email and I've removed myself from this bug.