Fix some includes in source/lib

Make include-what-you-use happy with some files in source/lib and fix
what needs to be fixed.

Ref: #8086
Signed-off-by: Ralph Sennhauser <ralph.sennhauser@gmail.com>

source/lib/allocators/dynarray.cpp

@@ -1,4 +1,4 @@
-/* Copyright (C) 2020 Wildfire Games.
+/* Copyright (C) 2025 Wildfire Games.
  *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files (the
@@ -25,13 +25,17 @@
  */
 
 #include "precompiled.h"
-#include "lib/allocators/dynarray.h"
+
+#include "dynarray.h"
 
 #include "lib/alignment.h"
+#include "lib/debug.h"
+#include "lib/posix/posix_types.h"
 #include "lib/sysdep/vm.h"
 
+#include <algorithm>
+#include <cstdint>
 #include <cstring>
-#include <string>
 
 static Status validate_da(DynArray* da)
 {