Issue #7099: Decimal.is_normal should return True for all nonzero

finite non-subnormal values, even those with exponent > Emax.

Lib/decimal.py

@@ -2917,7 +2917,7 @@ class Decimal(object):
             return False
         if context is None:
             context = getcontext()
-        return context.Emin <= self.adjusted() <= context.Emax
+        return context.Emin <= self.adjusted()
 
     def is_qnan(self):
         """Return True if self is a quiet NaN; otherwise return False."""