[MM][Bugfix] Update hf_config to hf_text_config (#5319)

### What this PR does / why we need it?

Following https://github.com/vllm-project/vllm-ascend/pull/5205, update
`hf_config` to `hf_text_config`.

Find more details at
https://github.com/vllm-project/vllm-ascend/pull/5205#issuecomment-3675417534
and
https://github.com/vllm-project/vllm-ascend/pull/5205#issuecomment-3677920872.

### Does this PR introduce _any_ user-facing change?

### How was this patch tested?

- vLLM version: release/v0.13.0
- vLLM main:
5fbfa8d9ef

Signed-off-by: shen-shanshan <467638484@qq.com>

vllm_ascend/distributed/kvpool/pool_worker.py

@@ -96,7 +96,7 @@ class KVPoolWorker:
 
         partitions = None
         if self.kv_role == "kv_consumer" and self.consumer_is_to_put:
-            num_hidden_layers = model_config.hf_config.num_hidden_layers
+            num_hidden_layers = model_config.hf_text_config.num_hidden_layers
             partition_list_str = vllm_config.kv_transfer_config.kv_connector_extra_config.get(
                 "prefill_pp_layer_partition", None)
             prefill_pp_size = int(