public webdav endpoint not bruteforce protected

How it was found

Again related to https://hackerone.com/reports/1173684

I am having some trouble finding the code. However if you do

curl -u "RANDOM1:RANDOM2" -X PROPFIND https://server/public.php/webdav

And then check your oc_bruteforce_attempts table. You'll see there is no entry registered.

Impact

Low just like on the other report. But should be fixed non the less.