IndexedDB migration: fix loading of data, fix object comparisons, add unmodified, etc

src/db/tables/settings.ts

@@ -64,6 +64,11 @@ export type Settings = {
   webPushServer?: string; // Web Push server URL
 };
 
+// type of settings where the searchBoxes are JSON strings instead of objects
+export type SettingsWithJsonStrings = Settings & {
+  searchBoxes: string;
+};
+
 export function checkIsAnyFeedFilterOn(settings: Settings): boolean {
   return !!(settings?.filterFeedByNearby || settings?.filterFeedByVisible);
 }