[SYCL][E2E] Use %{run-unfiltered-devices} in Basic/get_backend.cpp

[aelovikov-intel]

It is needed to handle suite's run_launcher param properly.

[aelovikov-intel]

Failures:

CUDA (tagging @intel/llvm-reviewers-cuda):

Failed Tests (1):
  SYCL :: OptionalKernelFeatures/is_compatible/is_compatible_with_aspects.cpp

Intel (being addressed in #10100):

Failed Tests (11):
  SYCL :: Basic/context-with-multiple-devices.cpp
  SYCL :: Basic/fpga_tests/fpga_aocx.cpp
  SYCL :: Basic/fpga_tests/fpga_dsp_control.cpp
  SYCL :: Basic/fpga_tests/fpga_latency_control_lsu.cpp
  SYCL :: Basic/fpga_tests/fpga_latency_control_pipe.cpp
  SYCL :: Basic/fpga_tests/fpga_lsu.cpp
  SYCL :: Basic/fpga_tests/global_fpga_device_selector.cpp
  SYCL :: DeviceLib/complex-fpga.cpp
  SYCL :: OnlineCompiler/online_compiler_OpenCL.cpp
  SYCL :: OptionalKernelFeatures/is_compatible/is_compatible_with_aspects.cpp
  SYCL :: Scheduler/DISABLED_DataMovement.cpp

are unrelated.

[aelovikov-intel]

Failures are unrelated - happen on the tests that aren't modified here. Most are expected to be fixed by #10100. The reason for the CUDA one

Failed Tests (1):
  SYCL :: OptionalKernelFeatures/is_compatible/is_compatible_with_aspects.cpp

is unknown to me at this moment. @intel/llvm-reviewers-cuda , any thoughts on it?