During automatic core upgrades, if installation results in a `WP_Error`, the `error` method is called on the skin with the details. However, in this case, two parameters are passed to `$skin->error`, but only one is accepted. This change passes only the running `WP_Error` instance as the sole parameter to `$skin->error`.
Also, this change adds an additional error to `$upgrade_result` before finally being passed to `$skin->error`, indicating that the installation failed. This adds additional context to the failure.
Props desrosj, sainthkh, devutpol, SergeyBiryukov.
Fixes#53284.
Built from https://develop.svn.wordpress.org/trunk@52539
git-svn-id: http://core.svn.wordpress.org/trunk@52129 1a063a9b-81f0-0310-95a4-ce76da25c4cd