PR feedback: comment out original inspect.isabstract code

Lib/inspect.py

@@ -300,15 +300,18 @@ def isroutine(object):
 
 def isabstract(object):
     """Return true if the object is an abstract base class (ABC)."""
-    # TODO: RUSTPYTHON
-    # TPFLAGS_IS_ABSTRACT is not being set for abstract classes, so this implementation differs from CPython.
     if not isinstance(object, type):
         return False
+    # TODO: RUSTPYTHON
+    # TPFLAGS_IS_ABSTRACT is not being set for abstract classes, so this implementation differs from CPython.
+    # if object.__flags__ & TPFLAGS_IS_ABSTRACT:
+    #     return True
     if not issubclass(type(object), abc.ABCMeta):
         return False
     if hasattr(object, '__abstractmethods__'):
         # It looks like ABCMeta.__new__ has finished running;
         # TPFLAGS_IS_ABSTRACT should have been accurate.
+        # return False
         return bool(getattr(object, '__abstractmethods__'))
     # It looks like ABCMeta.__new__ has not finished running yet; we're
     # probably in __init_subclass__. We'll look for abstractmethods manually.