fs_mgr: IWYU include <algorithm> for std::sort

GCC 14 starts to no longer include <algorithm> by default, resulting in
it needing to be explicitly declared.

Test: Recompiled with GCC 14 and succeeded

Change-Id: Ifc5dd58b7476ba728ae604cd2924cb68fbcab701
Signed-off-by: Christopher Fore <csfore@posteo.net>

fs_mgr/liblp/super_layout_builder.cpp

@@ -17,6 +17,8 @@
 
 #include <liblp/liblp.h>
 
+#include <algorithm>
+
 #include "images.h"
 #include "utility.h"
 #include "writer.h"

fs_mgr/liblp/utility.cpp

@@ -25,6 +25,7 @@
 #include <sys/ioctl.h>
 #endif
 
+#include <algorithm>
 #include <map>
 #include <string>
 #include <vector>