Reverts [37456] to allow users to remove/change a site icon even if the attachment has corrupt/missing data about sizes. Fixes #36749. Built from https://develop.svn.wordpress.org/trunk@37724 git-svn-id: http://core.svn.wordpress.org/trunk@37690 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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