Fixed type errors to unblock an internal type annotations refactoring…

… in JAX

Some JAX internal used Any instead of Array or in their type annotations.
jax-ml/jax#17760 changed these to alias jax.Array and
uncovered type errors fixed here.

PiperOrigin-RevId: 570090425

scenic/projects/baselines/detr/detr_base_model.py

@@ -336,7 +336,7 @@ def get_label(label):
         if batch_weights is not None:
           batch_num_inputs = batch_weights.sum()
         else:
-          batch_num_inputs = tgt_labels_onehot.shape[0]
+          batch_num_inputs = jnp.asarray(tgt_labels_onehot.shape[0])
         max_logits = jnp.max(orig_src_logits, axis=-2)
         tgt_labels_multihot = jnp.max(orig_tgt_labels_onehot, axis=-2)
         prec_at_one = model_utils.weighted_top_one_correctly_classified(