Honestly I think people just need to remember about context.
You can either be so hung up on a gender identity that no one else cares about and has no obligation to use words to validate as they are not responsible for affirming your identity its yours and yours alone and spend your work day punishing kids fir it or you can just accept people will om a day to day basis usually in the form of just trying to be polite /respectful will in a school setting probably just call you sir/miss.
People pronounce my name wrong all the time. It bothered me when it was kids in school taking the piss out of it and using it as another way to bully me.
But that's hardly the same as just being called in by the dr or someone giving me a job interview. I mean its not going to make a good impression if I kick off about it is it.
I know its a difficult and unusual name in this country so I usually just use my first name to save people the hassle/embarrassment. Sometimes they ask me where the name is from and I tell them.
But you can tell the difference between the situations.
I've seen.teachers just ask to be called Mrs A/C etc because they know their name will be harder to pronounce for small children.
Anyway there really shouldn't be huge focus on this in the classroom. If there are kids taking the piss " is that mx as in mixing bowl can I have a cake sir " then fine deal with it.
" sir I dont understand how to work this question out please can you help me"
Then just help the kid. Dd often finds it hard to speak up in class. If the first part of the interaction was berating her fir not playing the gender game she'd never ask again.