[libc++] Alphabetize and include-what-you-use. NFCI.

Differential Revision: https://reviews.llvm.org/D102781

NOKEYCHECK=True
GitOrigin-RevId: bfbd73f87d7b2c1140b43192cea6b7fbbfc35cd0
diff --git a/include/map b/include/map
index 4512dbd..22376f3 100644
--- a/include/map
+++ b/include/map
@@ -490,13 +490,12 @@
 #include <__node_handle>
 #include <__tree>
 #include <compare>
+#include <functional>
 #include <initializer_list>
 #include <iterator> // __libcpp_erase_if_container
 #include <memory>
-#include <utility>
-#include <functional>
-#include <initializer_list>
 #include <type_traits>
+#include <utility>
 #include <version>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)