`speaker-selection` permission in Permissions API - Firefox marked as supported but it doesn't in latest stable
What type of issue is this?
Incorrect support data (ex. Chrome says "86" but support was added in "40")
What information was incorrect, unhelpful, or incomplete?
Currently it's marked as being supported from version 92.
What browsers does this problem apply to, if applicable?
Firefox
What did you expect to see?
I expected Firefox to support this permission but it doesn't seem to.
Did you test this? If so, how?
Using https://jsfiddle.net/hot48ufz/ I get "speaker-selection permission: Not supported"

Can you link to any release notes, bugs, pull requests, or MDN pages related to this?
https://developer.mozilla.org/en-US/docs/Web/API/Permissions
Spotted while doing https://github.com/mdn/browser-compat-data/pull/17032
Do you have anything more you want to share?
Firefox doesn't support many features through this API (not even camera and microphone) so I suspect the permissions API support data added as part of https://github.com/mdn/browser-compat-data/pull/11993. Is erroneous and it was in fact never supported. But I currently have no evidence to support or dispute this assumption.
MDN URL
No response
MDN metadata
No response
The only reason I can think of why that was written is Firefox 104 does support navigator.mediaDevices.selectAudioOutput(), however, as you indicate, does not support navigator.permissions.request() at all.
PS Cleaned up the docs in https://github.com/mdn/content/pull/30863
We need a clear process on removal of stuff like this to trigger "someone" to remove stuff from content. Is there one?