Remove DT_DOUBLE from the T5 graph (#17891)

src/transformers/models/t5/modeling_tf_t5.py

@@ -268,7 +268,7 @@ class TFT5Attention(tf.keras.layers.Layer):
         max_exact = num_buckets // 2
         is_small = tf.math.less(relative_position, max_exact)
         relative_position_if_large = max_exact + tf.cast(
-            tf.math.log(relative_position / max_exact)
+            tf.math.log(tf.cast(relative_position, tf.float32) / tf.cast(max_exact, tf.float32))
             / math.log(max_distance / max_exact)
             * (num_buckets - max_exact),
             dtype=relative_position.dtype,