commitablectx: move unknown from workingctx

mercurial/context.py

@@ -978,6 +978,9 b' class commitablectx(basectx):'
         return self._status[2]
     def deleted(self):
         return self._status[3]
+    def unknown(self):
+        assert self._unknown is not None  # must call status first
+        return self._unknown
 
 class workingctx(commitablectx):
     """A workingctx object makes access to data related to
@@ -1005,9 +1008,6 b' class workingctx(commitablectx):'
             p = p[:-1]
         return [changectx(self._repo, x) for x in p]
 
-    def unknown(self):
-        assert self._unknown is not None  # must call status first
-        return self._unknown
     def ignored(self):
         assert self._ignored is not None  # must call status first
         return self._ignored