Add string-export support for related-values and translations display (#13263)

* Add string preview handler for related values display

* Fix continue clause in for loop

* Add string export for translations display

* Handle null values better

* ... while making sure false/0/'' still is considered a value

app/src/utils/save-as-csv.ts

@@ -37,6 +37,7 @@ export async function saveAsCSV(collection: string, fields: string[], items: Ite
 					? await display.handler(value, fieldsUsed[key]?.meta?.display_options ?? {}, {
 							interfaceOptions: fieldsUsed[key]?.meta?.options ?? {},
 							field: fieldsUsed[key] ?? undefined,
+							collection: collection,
 					  })
 					: value;
 			} else {