ZeroMem should not be a part of pal_consts.h

src/mem/allocconfig.h

@@ -4,6 +4,12 @@
 
 namespace snmalloc
 {
+  enum ZeroMem
+  {
+    NoZero,
+    YesZero
+  };
+
   // 0 intermediate bits results in power of 2 small allocs. 1 intermediate
   // bit gives additional sizeclasses at the midpoint between each power of 2.
   // 2 intermediate bits gives 3 intermediate sizeclasses, etc.

src/pal/pal_consts.h

@@ -25,10 +25,4 @@ namespace snmalloc
      */
     AlignedAllocation = (1 << 1)
   };
-
-  enum ZeroMem
-  {
-    NoZero,
-    YesZero
-  };
 }