swiftPackages.swift: check for modern CXX interop flag in wrapper

This check is what determines whether the appropriate CFLAGS are set so
that Swift can find the C++ headers it needs for interop

pkgs/development/compilers/swift/wrapper/wrapper.sh

@@ -107,7 +107,7 @@ dontLink=$isFrontend
 
 for p in "${params[@]}"; do
     case "$p" in
-        -enable-cxx-interop | -enable-experimental-cxx-interop)
+        -cxx-interoperability-mode=default | -enable-cxx-interop | -enable-experimental-cxx-interop)
             isCxx=1 ;;
     esac
 done