message: [XLA] Fix and re-enable clamp test.
  This was fixed in
diff: @@ -1023,14 +1023,13 @@ class SingleOpTest(ComputationTest):
  c.Constant(NumpyArrayF32(2)))
  self._ExecuteAndCompareExact(c, expected=[-1, -1, 0, 1, 2, 2])
  - # TODO(b/72689392): re-enable when bug S32 resolved
  - def DISABLED_testClampS32(self):
  + def testClampS32(self):
  c = self._NewComputation()
  c.Clamp(
  c.Constant(NumpyArrayS32(-1)),
  c.Constant(NumpyArrayS32([-2, -1, 0, 1, 2, 3])),
  c.Constant(NumpyArrayS32(2)))
  - self._ExecuteAndCompareExact(c, expected=[-1, 0, 1, 2, 2])
  + self._ExecuteAndCompareExact(c, expected=[-1, -1, 0, 1, 2, 2])
  def testSelect(self):
  c = self._NewComputation()
  