[SGLang] Wave runtime crashes when cache is turned off

As stated in the title, in SGLang environment paged decode attention kernels fails to launch when wave cache is turned off. Error log below:

```
> wave_runtime.launch(kernel_launch_info, kernel_args, dyn_dims, scalar_args)
E RuntimeError: Error 719(hipErrorLaunchFailure) /project/wave_lang/kernel/wave/runtime/runtime.cpp:172:
E hipModuleLaunchKernel( function, info.gridX, info.gridY, info.gridZ, info.blockX, info.blockY, info.blockZ, 0, stream, nullptr, (void **)&hipLaunchParams)
E unspecified launch failure

/opt/venv/lib/python3.10/site-packages/wave_lang/kernel/wave/utils/run_utils.py:97: RuntimeError
```

The error doesn't occur when the cache is turned on and when no cache exists.