[SYCL][E2E] Extend KernelCompiler/sycl.cpp with std::complex math coverage

[Copilot]

The KernelCompiler/sycl.cpp E2E test only exercised std::abs from <complex> when validating that cl_intel_devicelib_complex is wired up through the runtime kernel compiler. This extends coverage to additional std::complex<float> math functions.

Changes

• DeviceLibrariesSource: invoke std::sin, std::cos, std::tan, std::exp, std::log, std::sqrt, std::pow, and std::sinh on std::complex<float> into new buffer slots.
• test_device_libraries: grow the shared buffer from 4 to 12 elements; the existing ptr[i] != 1.0f check covers every new slot for input (1, 1).
• Drop the stale "approximately {0.84, 1.41, ...}" comment that no longer matched the buffer layout.

ptr[4]  = std::sin (std::complex<float>{ptr[4],  ptr[4]}).real();
ptr[5]  = std::cos (std::complex<float>{ptr[5],  ptr[5]}).real();
ptr[6]  = std::tan (std::complex<float>{ptr[6],  ptr[6]}).real();
ptr[7]  = std::exp (std::complex<float>{ptr[7],  ptr[7]}).real();
ptr[8]  = std::log (std::complex<float>{ptr[8],  ptr[8]}).real();
ptr[9]  = std::sqrt(std::complex<float>{ptr[9],  ptr[9]}).real();
ptr[10] = std::pow (std::complex<float>{ptr[10], ptr[10]},
                    std::complex<float>{2.0f, 0.0f}).real();
ptr[11] = std::sinh(std::complex<float>{ptr[11], ptr[11]}).real();