py3: avoid `b'%s' % type(...)` in a ProgrammingError

Differential Revision: https://phab.mercurial-scm.org/D7363

mercurial/localrepo.py

@@ -1568,7 +1568,7 b' class localrepository(object):'
             else:
                 raise error.ProgrammingError(
                     b"unsupported changeid '%s' of type %s"
-                    % (changeid, type(changeid))
+                    % (changeid, pycompat.sysstr(type(changeid)))
                 )
 
             return context.changectx(self, rev, node)