Revert [28719] and no longer math-process multiplication of negative numbers

see #19308
fixes #30445
props rmccue
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git-svn-id: http://core.svn.wordpress.org/trunk@30742 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Convert various uses of `(optional)` in core parameter descriptions to use the style prescribed in the inline documentation standards for PHP.

The style for marking parameters optional in inline PHP docs is: `@param type $var Optional. Description. Accepts. Default.`, where Accepts can be omitted on a case-by-case basis.

Props coffee2code.
Fixes #30591.

Built from https://develop.svn.wordpress.org/trunk@30753


git-svn-id: http://core.svn.wordpress.org/trunk@30743 1a063a9b-81f0-0310-95a4-ce76da25c4cd