[CI] Enable linux-aarch64-a2 (64GB) and tp2 * 2 max-parallel to speed up CI (#2065)

### What this PR does / why we need it?
Currently our workflow run time takes about 3 hours in total, which
seriously affects the developer experience, so it is urgent to have a
optimization, after this pr, It is expected that the running time of the
full CI can be shortened to 1h40min.

- Enable linux-aarch64-a2 (64GB) to replace linux-arm64-npu (32GB)
- Change TP4 ---> TP2 * 2 max-parallel
- Move DeepSeek-V2-Lite-W8A8 to single card test

### Does this PR introduce _any_ user-facing change?
No


- vLLM version: v0.10.0
- vLLM main:
a2480251ec

---------

Signed-off-by: wangli <wangli858794774@gmail.com>

tests/e2e/long_term/accuracy/accuracy_multicard.py

@@ -91,9 +91,9 @@ MORE_ARGS = {
     "Qwen/Qwen2.5-0.5B-Instruct":
     None,
     "Qwen/Qwen3-30B-A3B":
-    "tensor_parallel_size=4,enable_expert_parallel=True,enforce_eager=True",
+    "tensor_parallel_size=2,enable_expert_parallel=True,enforce_eager=True",
     "deepseek-ai/DeepSeek-V2-Lite":
-    "tensor_parallel_size=4,trust_remote_code=True,enforce_eager=True"
+    "tensor_parallel_size=2,trust_remote_code=True,enforce_eager=True"
 }
 
 multiprocessing.set_start_method("spawn", force=True)