[gn build] Port 2e43a30

Author: llvmgnsyncbot

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

@@ -954,6 +954,14 @@ if (current_toolchain == default_toolchain) {
       "__utility/to_underlying.h",
       "__utility/unreachable.h",
       "__variant/monostate.h",
+      "__vector/comparison.h",
+      "__vector/container_traits.h",
+      "__vector/erase.h",
+      "__vector/pmr.h",
+      "__vector/swap.h",
+      "__vector/vector.h",
+      "__vector/vector_bool.h",
+      "__vector/vector_bool_formatter.h",
       "__verbose_abort",
       "algorithm",
       "any",