Disallow empty node_id_range in tf.raw_ops.BoostedTreesCalculateBestFeatureSplitV2 and tf.raw_ops.BoostedTreesCalculateBestGainsPerFeature

PiperOrigin-RevId: 387165936
Change-Id: I2f70341af96236b2776c2a592c917d549c1fc1e2