Implement tests for `SYCL_KHR_DEFAULT_CONTEXT` extension #2799

Job	Run time
check-clang-format	5s
check-secrets	1s
build-common-base-image	0s
build-image-for-sycl-impl	0s
compile-cts (dpcpp, 20a088e1231c4ac85fd74c0de79c563977d2f38c)	6h 0m 3s
compile-cts (hipsycl, 3d8b1cd)	3m 1s
cts-compiles-for-all-implementations	1s
	6h 3m 11s

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