feat(admin-ui, medusa-react): product page categories management + nested multiselect (#3401)

* chore: allow products to be categorized in product create/edit page

* refactor: cleanup

* feat: invalidate product details cache when categories change

* fix: update changesets

* fix: push ner changeset

* feat: limit popup height

---------

Co-authored-by: fPolic <frane@medusajs.com>
Co-authored-by: Oliver Windall Juhl <59018053+olivermrbl@users.noreply.github.com>

packages/admin-ui/ui/src/components/molecules/delimited-list/index.tsx

@@ -26,7 +26,7 @@ const DelimitedList: React.FC<DelimitedListProps> = ({ list, delimit = 1 }) => {
   }
 
   return (
-    <span className="inter-small-regular">
+    <span className="inter-base-regular text-grey-50">
       {itemsToDisplay}
 
       {showExtraItemsInTooltip && (