Re-enable inductor tests on windows

[tfogal]

We had to disable a couple tests on windows because they now fail on windows:

FAILED thunder/tests/test_torch_compile_executor.py::test_torch_compile_litgpt - torch._dynamo.exc.BackendCompilerFailed: backend='inductor' raised:
RuntimeError: Compiler: cl is not found.

FAILED thunder/tests/test_autocast.py::test_torch_compile_autocast - 
torch._dynamo.exc.BackendCompilerFailed: backend='inductor' raised:
RuntimeError: Compiler: cl is not found.

🐛 Bug

Re-enable the tests.

To Reproduce

Just drop the or platform.system() == Windows in the existing skipIf clause on these two tests.

Additional context

Example CI run where this failed: https://github.com/Lightning-AI/lightning-thunder/actions/runs/11390861866/job/31693384602?pr=1324

cc @borda

[t-vi]

I think the main thing is to get the environment set up "vcvarsall.bat", unfortunately, it seems a bit of a hassle.

[stale[bot]]

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