How would knowing "1 Transwoman is currently housed in a female prison on the territory of Washington state" in any way risk causing harm to that transwoman, or help you identify her in any way?
It doesn’t. I think GP is confusing small cell counts in micro data (a real problem) with small numbers in aggregate data (sometimes a problem).
In this case, just a count and prison is not a privacy issue as someone would have to already know the individual is trans to identify them. And that’s the only information contained in the data release.
