locate: explicitly use dirstate.matches() for working copy
`hg locate` is odd in that it includes files that have been removed
from the working copy. It relies on workingctx.matches() for that. I
want to make workingctx.matches() not include removed files, so this
patch makes `hg locate` handle the working copy differently instead.
Differential Revision: https://phab.mercurial-scm.org/D3710
{
"conduit_uri": "https://phab.mercurial-scm.org/api",
"repository.callsign": "HG",
"arc.land.onto.default": "@",
"base": "hg:.^"
}