[SYCL] Ignore non-virtual dtors when building Level Zero loader (#9987)

Fixes build failure in post commit.

Discussion:
#9979 (comment)

Author: dm-vodopyanov

sycl/plugins/level_zero/CMakeLists.txt

@@ -32,6 +32,7 @@ if (NOT DEFINED LEVEL_ZERO_LIBRARY OR NOT DEFINED LEVEL_ZERO_INCLUDE_DIR)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unused-parameter")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-c++98-compat-extra-semi")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unknown-warning-option")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-non-virtual-dtor")
   endif()
 
   FetchContent_MakeAvailable(level-zero-loader)