Added suspense to LocationAddPage and LocationDetelePage

app/ui/LocationEditForm.tsx

@@ -12,10 +12,10 @@ export type LocationEditFormProps = {
     /** location which should be edited */
     location: BillingLocation,
     /** year adn month at a new billing location should be assigned */
-    yearMonth: undefined
+    yearMonth?: undefined
 } | {
     /** location which should be edited */
-    location: undefined,
+    location?: undefined,
     /** year adn month at a new billing location should be assigned */
     yearMonth: YearMonth
 }