Don't include access/htup_details.h in executor/tuptable.h

This is not at all needed; I suspect it was a simple mistake in commit
5408e233f0.  It causes htup_details.h to bleed into a huge number of
places via execnodes.h.  Remove it and fix fallout.

Discussion: https://postgr.es/m/202510021240.ptc2zl5cvwen@alvherre.pgsql

src/backend/access/common/printsimple.c

@@ -23,6 +23,7 @@
 #include "libpq/pqformat.h"
 #include "libpq/protocol.h"
 #include "utils/builtins.h"
+#include "varatt.h"
 
 /*
  * At startup time, send a RowDescription message.

src/backend/access/common/printtup.c

@@ -22,6 +22,7 @@
 #include "utils/lsyscache.h"
 #include "utils/memdebug.h"
 #include "utils/memutils.h"
+#include "varatt.h"
 
 
 static void printtup_startup(DestReceiver *self, int operation,

src/backend/access/common/tupconvert.c

@@ -18,6 +18,7 @@
  */
 #include "postgres.h"
 
+#include "access/htup_details.h"
 #include "access/tupconvert.h"
 #include "executor/tuptable.h"