[SYCL][LIT] Fix Windows ABI test

[uditagarwal97]

Windows ABI test broke after #20821

[uditagarwal97]

Looks like different ABI symbols are being generated for Windows pre and post commit.
Unlike pre-commit, for post-commit, the following symbols are absent:

??0device@_V1@sycl@@QEAA@$$QEAV012@@Z
??0device@_V1@sycl@@QEAA@AEBV012@@Z

One difference is that pre-commit uses MSVC's cl while post-commit uses icx - I wonder if different compilers are generating different ABI symbols.

[steffenlarsen]

One difference is that pre-commit uses MSVC's cl while post-commit uses icx - I wonder if different compilers are generating different ABI symbols.

That sounds somewhat likely, but maybe we can trick the latter to think that the symbols are exported.