Tweak default ID types processing order, step 16: Palettes.

Move Palettes type with other weird, not-really-data ID types (like
PaintCurves and Brushes), higher in the process.

Those preset-like types may use a lot of other ID types, but should only
be used by UI-related (and Scene, for tool settings) types.

source/blender/makesdna/DNA_ID.h

@@ -766,7 +766,6 @@ enum {
   INDEX_ID_LI = 0,
   INDEX_ID_IP,
   INDEX_ID_AC,
-  INDEX_ID_PAL,
   INDEX_ID_GD,
   INDEX_ID_NT,
   INDEX_ID_VF,
@@ -797,6 +796,7 @@ enum {
   INDEX_ID_LP,
   INDEX_ID_OB,
   INDEX_ID_GR,
+  INDEX_ID_PAL,
   INDEX_ID_PC,
   INDEX_ID_BR,
   INDEX_ID_SCE,