`$context` is a full path to the directory that is tested for being writable. A path shouldn't be a boolean value.
This also updates `WP_Upgrader_Skin::request_filesystem_credentials()` and `Automatic_Upgrader_Skin::request_filesystem_credentials()` and adds missing docs.
Props DrewAPicture, ocean90.
Fixes#37412.
Built from https://develop.svn.wordpress.org/trunk@38138
git-svn-id: http://core.svn.wordpress.org/trunk@38079 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Gone are the days of isolation and feelings of "meh", brought on by The Bleak Screen of Sadness. For a shiny knight has arrived to usher our plugins and themes along their arduous journey of installation, updates, and the inevitable fate of ultimate deletion.
Props swissspidy, adamsilverstein, mapk, afragen, ocean90, ryelle, j-falk, michael-arestad, melchoyce, DrewAPicture, AdamSoucie, ethitter, pento, dd32, kraftbj, Ipstenu, jorbin, afercia, stephdau, paulwilde, jipmoors, khag7, svovaf, jipmoors, obenland.
Fixes#22029, #25828, #31002, #31529, #31530, #31773, #33637, #35032.
Built from https://develop.svn.wordpress.org/trunk@37714
git-svn-id: http://core.svn.wordpress.org/trunk@37680 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Dominik Schilling
Konstantin Obenland