Make the "Incompatible" explainer more specific for Alt Styles

For Alt Style outfits, it's useful to call special attention to the Alt
Style feature as the likely cause of incompatibilities.

(Incompatibilities previously were most often caused by choosing a
species-specific item, then switching to another species. We generally
make it hard to enter this state, by hiding incompatible items during
search.)

app/javascript/wardrobe-2020/WardrobePage/ItemsPanel.js

@@ -58,7 +58,7 @@ import { useDeleteOutfitMutation } from "../loaders/outfits";
  * full width of the container, it doesn't look like it!
  */
 function ItemsPanel({ outfitState, outfitSaving, loading, dispatchToOutfit }) {
-  const { zonesAndItems, incompatibleItems } = outfitState;
+  const { altStyleId, zonesAndItems, incompatibleItems } = outfitState;
 
   return (
     <ClassNames>
@@ -98,7 +98,11 @@ function ItemsPanel({ outfitState, outfitSaving, loading, dispatchToOutfit }) {
                     zoneLabel="Incompatible"
                     afterHeader={
                       <Tooltip
-                        label="These items don't fit this pet"
+                        label={
+                          altStyleId != null
+                            ? "Many items don't fit Alt Style pets"
+                            : "These items don't fit this pet"
+                        }
                         placement="top"
                         openDelay={100}
                       >

app/javascript/wardrobe-2020/WardrobePage/PosePicker.js

@@ -738,8 +738,7 @@ function StyleExplanation() {
       opacity="0.7"
       marginTop="2"
     >
-      "Alt Styles" are special NC items that override the pet's usual appearance
-      via the{" "}
+      "Alt Styles" are NC items that override the pet's appearance via the{" "}
       <Box
         as="a"
         href="https://www.neopets.com/stylingchamber/"
@@ -748,7 +747,7 @@ function StyleExplanation() {
       >
         Styling Chamber
       </Box>
-      . The pet's color doesn't have to match.
+      . Not all items fit Alt Style pets. The pet's color doesn't have to match.
       <SupportOnly>
         <br />
         WIP: Only Support staff see this tab for now! 💖