message: Add log_cosh and logcosh to metrics export
diff: @@ -1456,7 +1456,10 @@ def huber(y_true, y_pred, delta=1.0):
  axis=-1)
  -@keras_export('keras.losses.log_cosh', 'keras.losses.logcosh')
  +@keras_export('keras.losses.log_cosh',
  + 'keras.losses.logcosh',
  + 'keras.metrics.log_cosh',
  + 'keras.metrics.logcosh')
  @dispatch.add_dispatch_support
  def log_cosh(y_true, y_pred):
  """Logarithm of the hyperbolic cosine of the prediction error.
  