Wire produce-box switching as a select entity

The boxes are not in the Algolia catalogue and their category pages look empty
because the grid calls every option 'Georgia Box' — each option's real name is
only in its own select-basket popup, so listing reads them there.

POST /s/submit/select-basket carries a scope the add-on endpoints do not:
popup-toggle is 'do' for the next delivery or 'so' for the standing order. The
select uses 'do', because a mistaken permanent change is the worse one to undo.

Also makes the popup regexes whitespace-tolerant. The site writes both
openPopup("x","y") and openPopup("x", "y"), and the strict form silently
matched nothing on the basket pages.

custom_components/freshharvest/translations/en.json

@@ -84,6 +84,11 @@
       "add_ons": {
         "name": "Add-ons"
       }
+    },
+    "select": {
+      "produce_box": {
+        "name": "Produce box"
+      }
     }
   }
 }