[gn build] Port 1bb2328

Author: llvmgnsyncbot

llvm/utils/gn/secondary/libcxx/include/BUILD.gn

@@ -1363,6 +1363,7 @@ if (current_toolchain == default_toolchain) {
       "__ranges/iota_view.h",
       "__ranges/istream_view.h",
       "__ranges/join_view.h",
+      "__ranges/join_with_view.h",
       "__ranges/lazy_split_view.h",
       "__ranges/movable_box.h",
       "__ranges/non_propagating_cache.h",