Make nvim/lib/k*.h headers be the last one in the list

So that they do the last nvim/func_attr.h include

src/nvim/os/channel.c

@@ -17,6 +17,8 @@
 #include "nvim/map.h"
 #include "nvim/lib/kvec.h"
 
+#include "nvim/lib/klist.h"
+
 typedef struct {
   uint64_t id;
   PMap(cstr_t) *subscribed_events;

src/nvim/os/event.c

@@ -4,7 +4,6 @@
 
 #include <uv.h>
 
-#include "nvim/lib/klist.h"
 #include "nvim/os/event.h"
 #include "nvim/os/input.h"
 #include "nvim/os/channel.h"
@@ -16,6 +15,8 @@
 #include "nvim/memory.h"
 #include "nvim/misc2.h"
 
+#include "nvim/lib/klist.h"
+
 // event will be cleaned up after it gets processed
 #define _destroy_event(x)  // do nothing
 KLIST_INIT(Event, Event, _destroy_event)