fix(tests): Pass down $LD_LIBRARY_PATH

fix #1542

Co-authored-by: @YanzhaoW

Author: dennisklein

cmake/private/FairRootTargets.cmake

@@ -67,6 +67,9 @@ function(fairroot_discover_catch2_tests target)
   set(req_version 3.22)
   if(ARGS_ENABLE_LD_LIBRARY_PATH_WORKAROUND)
     set(dl_paths ${LD_LIBRARY_PATH})
+    if(DEFINED ENV{LD_LIBRARY_PATH})
+      list(APPEND dl_paths $ENV{LD_LIBRARY_PATH})
+    endif()
   endif()
 
   if(dl_paths)