message: Fix issues with VA_INCLUDE_HEADERS when building with CUDA support
  ...and not only?
diff: @@ -328,18 +328,13 @@ if(HAVE_GAPI_ONEVPL)
  ocv_target_include_directories(${the_module} SYSTEM PRIVATE ${OPENCL_INCLUDE_DIRS})
  endif()
  - if(UNIX)
  - if(WITH_VA)
  - include("${OpenCV_SOURCE_DIR}/cmake/OpenCVFindVA.cmake")
  - if(VA_INCLUDE_DIR)
  + if(UNIX AND HAVE_VA)
  ocv_target_include_directories(${the_module} SYSTEM PRIVATE ${VA_INCLUDE_DIR})
  - ocv_target_include_directories(opencv_test_gapi SYSTEM PRIVATE ${VA_INCLUDE_DIR})
  ocv_target_link_libraries(${the_module} PRIVATE ${VA_LIBRARIES})
  + if(TARGET opencv_test_gapi)
  + ocv_target_include_directories(opencv_test_gapi SYSTEM PRIVATE ${VA_INCLUDE_DIR})
  ocv_target_link_libraries(opencv_test_gapi PRIVATE ${VA_LIBRARIES})
  endif()
  - else(WITH_VA)
  - message(FATAL_ERROR "libva not found: building HAVE_GAPI_ONEVPL without libVA support is impossible on UNIX systems")
  - endif(WITH_VA)
  endif()
  endif()
  @@ -382,7 +377,7 @@ if(TARGET example_gapi_onevpl_infer_single_roi)
  if(HAVE_D3D11 AND HAVE_OPENCL)
  ocv_target_include_directories(example_gapi_onevpl_infer_single_roi SYSTEM PRIVATE ${OPENCL_INCLUDE_DIRS})
  endif()
  - if(WITH_VA AND UNIX)
  + if(UNIX AND HAVE_VA)
  message ("GAPI VPL samples with VAAPI")
  ocv_target_include_directories(example_gapi_onevpl_infer_single_roi SYSTEM PRIVATE ${VA_INCLUDE_DIR})
  ocv_target_link_libraries(example_gapi_onevpl_infer_single_roi PRIVATE ${VA_LIBRARIES})
  