Summary: Ref T13250. See PHI1069. This is a small fix for `getRequestURI()` currently not working if the request includes "x[]=..." PHP-flavored array parameters, beacause they're parsed into arrays by `$_GET` and `setQueryParams(...)` no longer accepts nonscalars. Instead, just parse the raw request URI. Test Plan: Visited `/search/hovercard/?phids[]=X`, no more fatal. Dumped the resulting URI, saw it had the right value. Tried `?phids[]=x&x=1&x=1&x=1`, saw the parameters correctly preserved. Reviewers: amckinley Reviewed By: amckinley Maniphest Tasks: T13250 Differential Revision: https://secure.phabricator.com/D20147