[CI] Move longseq Nightly CI (#5577)

### What this PR does / why we need it?
move longseq nightly CI to correct path due to #5479 [1/N] Refactor
nightly test structure

Signed-off-by: daishixun <dsxsteven@sina.com>

tests/e2e/nightly/multi_node/config/Qwen3-235B-W8A8-longseq.yaml

@@ -0,0 +1,93 @@
+test_name: "test Qwen3-235B-A22B-W8A8-longseq disaggregated_prefill"
+model: "vllm-ascend/Qwen3-235B-A22B-W8A8"
+num_nodes: 2
+npu_per_node: 16
+env_common:
+  VLLM_USE_MODELSCOPE: true
+  OMP_PROC_BIND: false
+  OMP_NUM_THREADS: 100
+  HCCL_BUFFSIZE: 1024
+  SERVER_PORT: 8080
+  NUMEXPR_MAX_THREADS: 128
+disaggregated_prefill:
+  enabled: true
+  prefiller_host_index: [0]
+  decoder_host_index: [1]
+
+deployment:
+  -
+    server_cmd: >
+        vllm serve "vllm-ascend/Qwen3-235B-A22B-W8A8"
+        --host 0.0.0.0
+        --port $SERVER_PORT
+        --data-parallel-size 1
+        --decode-context-parallel-size 2
+        --prefill-context-parallel-size 2
+        --tensor-parallel-size 8
+        --cp-kv-cache-interleave-size 128
+        --seed 1024
+        --enforce-eager
+        --enable-expert-parallel
+        --max-num-seqs 16
+        --max-model-len 8192
+        --max-num-batched-tokens 8192
+        --quantization ascend
+        --trust-remote-code
+        --no-enable-prefix-caching
+        --gpu-memory-utilization 0.9
+        --kv-transfer-config
+        '{"kv_connector": "MooncakeConnectorV1",
+        "kv_role": "kv_producer",
+        "kv_port": "30000",
+        "engine_id": "0",
+        "kv_connector_module_path": "vllm_ascend.distributed.mooncake_connector",
+        "kv_connector_extra_config": {
+                  "prefill": {
+                          "dp_size": 1,
+                          "tp_size": 8
+                  },
+                  "decode": {
+                          "dp_size": 2,
+                          "tp_size": 8
+                  }
+            }
+        }'
+
+  -
+    server_cmd: >
+        vllm serve "vllm-ascend/Qwen3-235B-A22B-W8A8"
+        --host 0.0.0.0
+        --port $SERVER_PORT
+        --data-parallel-size 2
+        --decode-context-parallel-size 2
+        --prefill-context-parallel-size 1
+        --tensor-parallel-size 8
+        --cp-kv-cache-interleave-size 128
+        --seed 1024
+        --quantization ascend
+        --max-num-seqs 16
+        --max-model-len 8192
+        --max-num-batched-tokens 8192
+        --enable-expert-parallel
+        --trust-remote-code
+        --no-enable-prefix-caching
+        --gpu-memory-utilization 0.9
+        --compilation_config '{"cudagraph_mode": "FULL_DECODE_ONLY"}'
+        --kv-transfer-config
+        '{"kv_connector": "MooncakeConnectorV1",
+        "kv_role": "kv_consumer",
+        "kv_port": "30100",
+        "engine_id": "1",
+        "kv_connector_module_path": "vllm_ascend.distributed.mooncake_connector",
+        "kv_connector_extra_config": {
+                  "prefill": {
+                          "dp_size": 1,
+                          "tp_size": 8
+                  },
+                  "decode": {
+                          "dp_size": 2,
+                          "tp_size": 8
+                  }
+            }
+        }'
+benchmarks: