[SYCL][test] Throw if order of ABI symbols is incorrect

[uditagarwal97]

Recently, there were several occurrences where developers manually updated the ABI symbol dump file to add a new symbol. This results into unrelated changes on PRs when someone correctly uses abi_check.py file to regenerate the ABI symbols, (for example: #20422)
This PR makes abi_check.py to fail if the order of ABI symbols is incorrect, thus discouraging developers from manually editing the symbol dump file.

[uditagarwal97]

Example of the script failing when ABI symbol ordering is wrong:
Windows: https://github.com/intel/llvm/actions/runs/18698405374/job/53321587374#step:13:836
Linux: https://github.com/intel/llvm/actions/runs/18698405374/job/53321587374#step:13:832

[uditagarwal97]

Jenkins CI failure is because of:

llvm.src/sycl-jit/jit-compiler/lib/rtc/DeviceCompilation.cpp:129:66: error: ‘StrLen’ may be used uninitialized in this function [-Werror=maybe-uninitialized]

which is unrelated to this PR and I suppose we also have an internal ticket tracking this failure.

[KornevNikita]

@uditagarwal97 just a thought - if you change the ABI you have to re-generate dumps on both OS (and I hate using windows :D). Maybe we could automate this by adding a step like "generate & upload ABI dump as an artifact" to reusable build workflows aka sycl-linux-build and so on.

[aelovikov-intel]

@uditagarwal97 just a thought - if you change the ABI you have to re-generate dumps on both OS (and I hate using windows :D). Maybe we could automate this by adding a step like "generate & upload ABI dump as an artifact" to reusable build workflows aka sycl-linux-build and so on.

I've done that inside Windows build quite some time ago. From this PR's https://github.com/intel/llvm/actions/runs/18698871155/job/53331719766?pr=20424:

And the artifact with full re-generated symbols dump is available at https://github.com/intel/llvm/actions/runs/18698871155?pr=20424 as well, although I usually just expand the diff and copy added symbols to proper places locally.