Not officially, but some people have head canons that she is.
I mean, headcanons are headcanons but it'd have to be something actually plausible
She has "protect trans kids" poster on her wall in the second movie. It's not a confirmation, but it's not nothing, either.
There's also the trans colors in her outfit and they use those colors again heavily in her original universe. The coloring in her universe is probably more related to her outfit, but it's pretty conspicuous either way.