Misc UI fixes (#11237)

* add close button to all toasters

* check if persistent options are loaded

* add id to prevent message duplication in bottom bar

web/src/components/settings/ZoneEditPane.tsx

@@ -318,7 +318,7 @@ export default function ZoneEditPane({
 
   return (
     <>
-      <Toaster position="top-center" />
+      <Toaster position="top-center" closeButton={true} />
       <Heading as="h3" className="my-2">
         {polygon.name.length ? "Edit" : "New"} Zone
       </Heading>