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/__init__.py

@@ -13,6 +13,7 @@ from .coordinator import FreshHarvestCoordinator
 PLATFORMS: list[Platform] = [
     Platform.BINARY_SENSOR,
     Platform.BUTTON,
+    Platform.SELECT,
     Platform.SENSOR,
     Platform.SWITCH,
     Platform.TODO,