[Perf][Qwen25_VL] Avoid triggering CPU synchronization in ViT's attn forward #4442
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优化ViT中attn前向传播后的CPU同步。修改前后相同case输出一致。
修改前：
['图中的文物是一件佛像，具体来说是释迦牟尼佛的造像。根据其风格和装饰特点，这件佛像是唐代（公元618年-907年）的作品。唐代是中国历史上一个非常重要的时期，佛教艺术在此期间达到了极高的水平，这件佛像正是这一时期的典型代表之一。']修改后：
['图中的文物是一件佛像，具体来说是释迦牟尼佛的造像。根据其风格和装饰特点，这件佛像是唐代（公元618年-907年）的作品。唐代是中国历史上一个非常重要的时期，佛教艺术在此期间达到了极高的水平，这件佛像正是这一时期的典型代表之一。']