Known product issue: PI-004822
https://www.jamf.com/jamf-nation/discussions/27803/disallow-camera-devices-true
Workaround: Add a restrictions payload to this profile containing your Security & Privacy payload.
You may also want to try the MCX-To-Profile 'style' method instead, i found it resolved our issues with the camera being disabled. That methodology allows for more refined profiles.
for example....
https://github.com/timsutton/mcxToProfile
(also, can essentially doing the same thing by created plist's and adding to the 'custom' entry in a config profile.