Fix some ci issue and refactor modelrunner (#2445)

### What this PR does / why we need it?
Fix some ci issue and refactor modelrunner

### Does this PR introduce _any_ user-facing change?
N/A

### How was this patch tested?
CI passed with existing test.

- vLLM version: v0.10.0
- vLLM main:
4d9c61993a

---------

Signed-off-by: wangli <wangli858794774@gmail.com>
Signed-off-by: MengqingCao <cmq0113@163.com>
Signed-off-by: weiguihua2 <weiguihua2@huawei.com>
Co-authored-by: wangli <wangli858794774@gmail.com>
Co-authored-by: weiguihua2 <weiguihua2@huawei.com>

tests/ut/kv_connector/test_remote_prefill_lifecycle.py

@@ -42,7 +42,8 @@ def test_basic_lifecycle():
 
     request = create_request(request_id=1,
                              num_tokens=NUM_TOKENS,
-                             do_remote_prefill=True)
+                             do_remote_prefill=True,
+                             block_size=BLOCK_SIZE)
 
     scheduler.add_request(request)
     request_id = request.request_id