[SYCL] Handle passing O-group options via -Xarch_<arch> for JIT compilation (#21129)
This change enables passing `O-group` optimization options specified via
`-Xarch_<arch>` through to SYCL JIT compilation.
```
Example:
clang -fsycl --offload-new-driver -Xarch_spir64 -O3 -### sycl-file.cpp
```