Merge pull request #25706 from cudawarped:fix_cuda_first_python_dep

`cuda`: Add missing python CUDA dependency when CUDA is a first class language

modules/python/python_loader.cmake

@@ -68,8 +68,14 @@ if(DEFINED OPENCV_PYTHON_INSTALL_PATH)
   endif()
   set(CMAKE_PYTHON_BINARIES_PATH "${CMAKE_PYTHON_BINARIES_INSTALL_PATH}")
   if (WIN32 AND HAVE_CUDA)
-    if (DEFINED CUDA_TOOLKIT_ROOT_DIR)
-      list(APPEND CMAKE_PYTHON_BINARIES_PATH "os.path.join(os.getenv('CUDA_PATH', '${CUDA_TOOLKIT_ROOT_DIR}'), 'bin')")
+    if (ENABLE_CUDA_FIRST_CLASS_LANGUAGE)
+      if (DEFINED CUDAToolkit_LIBRARY_ROOT)
+        list(APPEND CMAKE_PYTHON_BINARIES_PATH "os.path.join(os.getenv('CUDA_PATH', '${CUDAToolkit_LIBRARY_ROOT}'), 'bin')")
+      endif()
+    else()
+      if (DEFINED CUDA_TOOLKIT_ROOT_DIR)
+        list(APPEND CMAKE_PYTHON_BINARIES_PATH "os.path.join(os.getenv('CUDA_PATH', '${CUDA_TOOLKIT_ROOT_DIR}'), 'bin')")
+      endif()
     endif()
   endif()
   string(REPLACE ";" ",\n    " CMAKE_PYTHON_BINARIES_PATH "${CMAKE_PYTHON_BINARIES_PATH}")