[bugfix] some bugs maybe fail to run (#896)

### What this PR does / why we need it?
Solve the bug that the graph mode is the same as p and d, and some other
bugs.
### Does this PR introduce _any_ user-facing change?
Wouldn't be
### How was this patch tested?
Follow the end-to-end test

Signed-off-by: ningbenzhe1 <ningbenzhe@huawei.com>

vllm_ascend/attention/attention_v1.py

@@ -129,6 +129,9 @@ class AscendMetadata:
     attn_state: AscendAttentionState = AscendAttentionState.ChunkedPrefill
     attn_mask: Optional[torch.Tensor] = None
 
+    # For logging.
+    num_input_tokens: int = 0  # Number of tokens including padding.
+
 
 class AscendAttentionMetadataBuilder: