[urlpublishing] handle sub-types in RestPathEvaluator
Since commit 31a1813d53f3 "[entity/url publishing] fetch_rqlst should
use 'is_instance_of' instead of 'is'", the RestPathEvaluator's input
rset can have more than one etype, so it can't always use sameetypelist.
Related to #3825488
from cubicweb.schemas.base import in_group, CWSourceSchemaConfig
# copy __permissions__ to avoid modifying a shared dictionary
in_group.__permissions__ = in_group.__permissions__.copy()
in_group.__permissions__['read'] = ('managers',)
cw_for_source = CWSourceSchemaConfig.get_relation('cw_for_source')
cw_for_source.__permissions__ = {'read': ('managers', 'users'),
'add': ('managers',),
'delete': ('managers',)}