Tests DeviceCodeSplit/split-per-kernel.cpp and DeviceCodeSplit/split-per-source-main.cpp marked as XFAIL on HIP NVIDIA

### Describe the bug

The E2E tests `DeviceCodeSplit/split-per-kernel.cpp` and `DeviceCodeSplit/split-per-source-main.cpp` are marked as XFAIL on HIP NVIDIA.
It is unclear how to verify or even reproduce this since we don't test on HIP NVIDIA platforms so setting the help wanted label. One of the main purposes of this issue is to have a tracker for these XFAIL's.

### To reproduce

```
llvm-lit -v sycl/test-e2e/DeviceCodeSplit/split-per-kernel.cpp
llvm-lit -v sycl/test-e2e/DeviceCodeSplit/split-per-source-main.cpp
```

### Environment

- OS: Any
- Target device and vendor: HIP NVIDIA
- DPC++ version: [e.g. commit hash or output of `clang++ --version`]
- Dependencies version: [e.g. the output of `sycl-ls --verbose`]

### Additional context

_No response_