Patch CUDA training logic to enable wasmedge-llmc gpu backend #23

Job	Run time
build-cuda-fp16	1m 13s
build-and-test-cpu (ubuntu-latest)	4m 36s
build-cuda-fp32	1m 15s
build-cuda-bf16	1m 10s
build-and-test-cpu (macos-latest)	3m 16s
build-cuda-kernels	1m 33s
build-and-test-cpu (windows-latest)	7m 58s
build-ubuntu20-04	1m 40s
build-cuda-windows	2m 1s
	24m 42s

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