clfilter: ensure that tag logic runs unfiltered

The current tag logic is not aware of filtering. We keep the status quo,
ensuring that the tag cache is computed as before: without any filtering.

mercurial/localrepo.py

@@ -394,6 +394,7 b' class localrepository(object):'
     def hook(self, name, throw=False, **args):
         return hook.hook(self.ui, self, name, throw, **args)
 
+    @unfilteredmeth
     def _tag(self, names, node, message, local, user, date, extra={}):
         if isinstance(names, str):
             names = (names,)